Page 1
Dräger Medizintechnik
Error List
1 Babytherm 8004/8010 Error List
• Click on an error code to jump to relevant description of the error code.
Micro-controller errors cause a program abort. Other errors cause a
program abort only after they have occurred several times. All errors and
their occurrence are written in the error log.
Error codes shown on the text display
"Acc" "17" "40" "63" "86"
"01" "18" "41" "64" "87"
"02" "20" "42" "65" "88"
"03" "21" "43" "66" "89"
"04" "22" "44" "67" "90"
"05" "23" "50" "68" "91"
"06" "24" "51" "69" "92"
"08" "25" "53" "70" "93"
"10" "26" "54" "71" "94"
"11" "30" "55" "80" "95"
"12" "31" "56" "81"
"13" "32" "57" "82"
"14" "33" "58" "83"
"15" "34" "59" "84"
"16" "35" "60" "85"
For internal use only. Copyright reserved.
GBR6132300FL1.fm 10.09.99
6132.300 Babytherm 8004/Babytherm 8010 08/99 Error List Page 1
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Dräger Medizintechnik
Error Cause Corrective Measure
Acc The GoldCap capacitor on the
WT Power PCB or the
charging circuit of the
GoldCap capacitor on the
WT Power PCB is defective.
The GoldCap capacitor
charging voltage ON/OFF
switching element (located on
the WT Controller PCB or the
A/D channel "VIN7" on the
WT Controller PCB is
defective.
• Check the WT Power PCB as follows:
− Repair Instructions: "Checking the WT
Power PCB"
− DrägerService Mode: "Mode d07: Displaying
the GoldCap Voltage"
• Replace the WT Power PCB, see Repair
Instructions: "Replacing the WT Power PCB".
• Replace the WT Controller PCB, see Repair
Instructions: "Replacing the WT Controller
PCB".
For internal use only. Copyright reserved.
GBR6132300FL1.fm 10.09.99
6132.300 Babytherm 8004/Babytherm 8010 08/99 Error List Page 2
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Dräger Medizintechnik
Error Cause Corrective Measure
01 The supply voltage on the
WT Sensor PCB is not
available. The micro-controller
of the WT Controller PCB
cannot read the +5V supply
voltage and the reference
voltage. The DC/DC converter
for the 5V supply voltage on the
WT Sensor PCB is defective.
The +5V supply voltage is
outside tolerance (tolerance
range: 2 V to 7 V).
A supply voltage on the
WT Power PCB is not
available.
Communication with the
WT Controller PCB is
disturbed. No measured values
are displayed.
• Check the WT Sensor PCB using the
DrägerService Mode: "Mode d10: Displaying
WT Sensor PCB Voltage".
• Replace the WT Sensor PCB, see Repair
Instructions: "Replacing the WT Sensor PCB".
• Check the WT Power PCB using the Repair
Instructions: "Checking the WT Power PCB".
• Replace the WT Power PCB, see Repair
Instructions: "Replacing the WT Power PCB".
• Check communication in the DrägerService
Mode: tests d03 through d06, d08, d16 and
d17.
• Replace the WT Controller PCB, see Repair
Instructions: "Replacing the WT Controller
PCB".
• Check the following cable connections:
− WT Sensor PCB to control unit
− Control unit to WT Power PCB
− WT Power PCB to WT Controller PCB.
• Fix or replace the defective cable connection.
For internal use only. Copyright reserved.
GBR6132300FL1.fm 10.09.99
6132.300 Babytherm 8004/Babytherm 8010 08/99 Error List Page 3
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Dräger Medizintechnik
Error Cause Corrective Measure
02 Skin-temperature measurement
of WT Sensor PCB is faulty.
The micro-controller of the
WT Controller PCB has
compared the skin-temperature
values and detected an error.
Short-circuit fault in a skintemperature sensor.
The cable connection from the
skin-temperature sensor to the
WT Sensor PCB is defective.
The WT Sensor PCB is
defective.
• Check communication in the DrägerService
Mode: tests d03 through d06, d08, d16 and
d17.
• Replace the WT Sensor PCB, see Repair
Instructions: "Replacing the WT Sensor PCB".
• Check or replace skin-temperature sensors.
• Fix or replace the cable connection.
• Check the WT Sensor PCB in the
DrägerService Mode as follows:
− "Mode d16: Displaying the Skin Temperature
Channel 1 and the Reference Value"
− "Mode d17: Displaying the Skin Temperature
Channel 2 and the Reference Value".
• Replace the WT Sensor PCB, see Repair
Instructions: "Replacing the WT Sensor PCB".
Communication with the
WT Controller PCB is
disturbed. No measured values
are displayed.
• Check communication in the DrägerService
Mode: tests d03 through d06, d08, d16 and
d17.
• Replace the WT Controller PCB, see Repair
Instructions: "Replacing the WT Controller
PCB".
• Check the following cable connections:
− WT Sensor PCB to control unit
− Control unit to WT Power PCB
− WT Power PCB to WT Controller PCB
• Fix or replace the defective cable connection.
For internal use only. Copyright reserved.
GBR6132300FL1.fm 10.09.99
6132.300 Babytherm 8004/Babytherm 8010 08/99 Error List Page 4
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Dräger Medizintechnik
Error Cause Corrective Measure
03 The skin-temperature reference
channel 1 on the
WT Sensor PCB is faulty.
During the 10-minute test, the
micro-controller detects that
the value of skin-temperature
channel 1 is outside tolerance.
Communication with the
WT Controller PCB is
disturbed. No measured values
are displayed.
• Check the WT Sensor PCB using the
DrägerService Mode: "Mode d16: Displaying
the Skin Temperature Channel 1 and the
Reference Value".
• Replace the WT Sensor PCB, see Repair
Instructions: "Replacing the WT Sensor PCB".
• Check the following cable connections:
− WT Sensor PCB to control unit
− Control unit to WT Power PCB
− WT Power PCB to WT Controller PCB
• Fix or replace the defective cable connection.
• Replace the WT Controller PCB, see Repair
Instructions: "Replacing the WT Controller
PCB".
• Replace the WT Power PCB, see Repair
Instructions: "Replacing the WT Power PCB".
For internal use only. Copyright reserved.
GBR6132300FL1.fm 10.09.99
6132.300 Babytherm 8004/Babytherm 8010 08/99 Error List Page 5
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Dräger Medizintechnik
Error Cause Corrective Measure
04 The skin-temperature reference
channel 2 on the
WT Sensor PCB is faulty.
During the 10-minute test, the
micro-controller detects that
the value of skin-temperature
channel 2 is outside tolerance.
Communication with the
WT Controller PCB is
disturbed. No measured values
are displayed.
• Check the WT Sensor PCB using the
DrägerService Mode: "Mode d17: Displaying
the Skin Temperature Channel 2 and the
Reference Value".
• Replace the WT Sensor PCB, see Repair
Instructions: "Replacing the WT Sensor PCB".
• Check the following cable connections:
− WT Sensor PCB to control unit
− Control unit to WT Power PCB
− WT Power PCB to WT Controller PCB
• Fix or replace the defective cable connection.
• Replace the WT Controller PCB, see Repair
Instructions: "Replacing the WT Controller
PCB".
• Replace the WT Power PCB, see Repair
Instructions: "Replacing the WT Power PCB".
For internal use only. Copyright reserved.
GBR6132300FL1.fm 10.09.99
6132.300 Babytherm 8004/Babytherm 8010 08/99 Error List Page 6
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Dräger Medizintechnik
Error Cause Corrective Measure
05 The skin temperature analog
switch 1 on the
WT Sensor PCB is defective.
The micro-controller of the
WT Controller PCB has
detected a signal although the
measuring signal and the
reference signal of the skintemperature channel 1 are
switched off.
Communication with the
WT Controller PCB is
disturbed.
• Check the WT Sensor PCB using the
DrägerService Mode: "Mode d16: Displaying
the Skin Temperature Channel 1 and the
Reference Value".
• Replace the WT Sensor PCB, see Repair
Instructions: "Replacing the WT Sensor PCB".
• Check the following cable connections:
− WT Sensor PCB to control unit
− Control unit to WT Power PCB
− WT Power PCB to WT Controller PCB
• Fix or replace the defective cable connection.
• Replace the WT Controller PCB, see Repair
Instructions: "Replacing the WT Controller
PCB".
• Replace the WT Power PCB, see Repair
Instructions: "Replacing the WT Power PCB".
For internal use only. Copyright reserved.
GBR6132300FL1.fm 10.09.99
6132.300 Babytherm 8004/Babytherm 8010 08/99 Error List Page 7
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Dräger Medizintechnik
Error Cause Corrective Measure
06 The skin temperature analog
switch 2 on the
WT Sensor PCB is defective.
The micro-controller of the
WT Controller PCB has
detected a signal although the
measuring signal and the
reference signal of the skintemperature channel 2 are
switched off.
Communication with the
WT Controller PCB is
disturbed.
08 Read error during
configuration.
• Check the WT Sensor PCB using the
DrägerService Mode: "Mode d17: Displaying
the Skin Temperature Channel 2 and the
Reference Value".
• Replace the WT Sensor PCB, see Repair
Instructions: "Replacing the WT Sensor PCB".
• Check the following cable connections:
− WT Sensor PCB to control unit
− Control unit to WT Power PCB
− WT Power PCB to WT Controller PCB
• Fix or replace the defective cable connection.
• Replace the WT Controller PCB, see Repair
Instructions: "Replacing the WT Controller
PCB".
• Replace the WT Power PCB, see Repair
Instructions: "Replacing the WT Power PCB".
-----------------------------------------------------
10 The EPROM (D2) on the
WT Controller PCB or the
WT Controller PCB is
defective. The error has been
detected during the self-test.
• Check the WT Controller PCB using the
Repair Instructions: "Checking the
WT Controller PCB".
• Replace EPROM (D2) on the
WT Controller PCB: "General Information
About the WT Controller PCB"
• Replace the WT Controller PCB, see Repair
Instructions: "Replacing the WT Controller
PCB".
For internal use only. Copyright reserved.
GBR6132300FL1.fm 10.09.99
6132.300 Babytherm 8004/Babytherm 8010 08/99 Error List Page 8
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Dräger Medizintechnik
Error Cause Corrective Measure
11 The EPROM (D2) on the
WT Controller PCB or the
WT Controller PCB is
defective. A checksum error
has been detected during
operation.
12 The RAM or the
WT Controller PCB is
defective. The error has been
detected during the self-test.
• Check the WT Controller PCB using the
Repair Instructions: "Checking the
WT Controller PCB".
• Replace EPROM (D2) on the
WT Controller PCB: "General Information
About the WT Controller PCB".
• Replace the WT Controller PCB, see Repair
Instructions: "Replacing the WT Controller
PCB".
• Check the WT Controller PCB using the
Repair Instructions: "Checking the
WT Controller PCB".
• Replace the WT Controller PCB, see Repair
Instructions: "Replacing the WT Controller
PCB".
For internal use only. Copyright reserved.
GBR6132300FL1.fm 10.09.99
6132.300 Babytherm 8004/Babytherm 8010 08/99 Error List Page 9
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Dräger Medizintechnik
Error Cause Corrective Measure
13 Software, RAM, or
WT Controller PCB error. A
value has been stored
incorrectly in the RAM.
External interference due to
electrostatics.
14 Error in program sequence on
the WT Controller PCB.
EPROM (D2) or the
WT Controller PCB is
defective.
15 The EEPROM or the
WT Controller PCB is
defective. The error has been
detected during the self-test.
• Check the WT Controller PCB using the
Repair Instructions: "Checking the
WT Controller PCB".
• If error 13 has occurred several times, replace
the WT Controller PCB. Replace the
WT Controller PCB, see Repair Instructions:
"Replacing the WT Controller PCB".
• Remove external interference due to
electrostatics.
• Check the WT Controller PCB using the
Repair Instructions: "Checking the
WT Controller PCB".
• Replace EPROM (D2) on the
WT Controller PCB, see Repair Instructions:
"General Information About the
WT Controller PCB".
• Replace the WT Controller PCB, see Repair
Instructions: "Replacing the WT Controller
PCB".
• Replace the WT Controller PCB, see Repair
Instructions: "Replacing the WT Controller
PCB".
16 Watchdog 1 on the
WT Controller PCB is
defective.
17 Watchdog 2 on the
WT Controller PCB is
defective.
18 Analog error. Several analog
inputs of the A/D converter on
the WT Sensor PCB have a
short-circuit fault.
• Check the WT Controller PCB using the
DrägerService Mode: "Mode d11: Displaying
the Time of Watchdog 1".
• Replace the WT Controller PCB, see Repair
Instructions: "Replacing the WT Controller
PCB".
• Check the WT Controller PCB using the
DrägerService Mode: "Mode d12: Displaying
the Time of Watchdog 2".
• Replace the WT Controller PCB, see Repair
Instructions: "Replacing the WT Controller
PCB".
• Check the WT Sensor PCB using the
DrägerService Mode: tests d03 through d10,
d16 and d17.
• Replace the WT Sensor PCB, see Repair
Instructions: "Replacing the WT Sensor PCB".
For internal use only. Copyright reserved.
GBR6132300FL1.fm 10.09.99
6132.300 Babytherm 8004/Babytherm 8010 08/99 Error List Page 10
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Dräger Medizintechnik
Error Cause Corrective Measure
20 Temperature measurement of
the mattress heater on the
WT Sensor PCB is faulty. The
micro-controller has detected
that the value of the mattress
temperature measurement
channel 1 (value of mattress
temperature measurement
channel = 41.6 °C) is outside
tolerance.
21 Temperature measurement of
the mattress heater on the
WT Sensor PCB is faulty. The
micro-controller has detected
that the value of the mattress
temperature measurement
channel 3 (value of mattress
temperature measurement
channel = 41.6 °C) is outside
tolerance.
22 The excess-temperature
comparator on the
WT Sensor PCB is faulty. The
micro-controller switches the
temperature channel 1 to test
resistance (41.6 °C). The
micro-controller has detected
that the excess-temperature
comparator has not switched.
• Check the WT Sensor PCB using the
DrägerService Mode: "Mode d03: Testing the
Mattress Temperature Channel 1 (Babytherm
8010)".
• Replace the WT Sensor PCB, see Repair
Instructions: "Replacing the WT Sensor PCB".
• Check the WT Sensor PCB using the
DrägerService Mode: "Mode d05: Testing the
Mattress Temperature Channel 3 (Babytherm
8010)".
• Replace the WT Sensor PCB, see Repair
Instructions: "Replacing the WT Sensor PCB".
• Check the WT Sensor PCB using the
DrägerService Mode: "Mode d03: Testing the
Mattress Temperature Channel 1 (Babytherm
8010)".
• Replace the WT Sensor PCB, see Repair
Instructions: "Replacing the WT Sensor PCB".
The WT Controller PCB is
defective.
For internal use only. Copyright reserved.
GBR6132300FL1.fm 10.09.99
6132.300 Babytherm 8004/Babytherm 8010 08/99 Error List Page 11
• Check the WT Controller PCB using the
Repair Instructions: "Checking the
WT Controller PCB".
• Replace the WT Controller PCB, see Repair
Instructions: "Replacing the WT Controller
PCB".
Page 12
Dräger Medizintechnik
Error Cause Corrective Measure
23 The excess-temperature
comparator on the
WT Sensor PCB is faulty. The
micro-controller switches the
temperature channel 3 to test
resistance (41.6 °C). The
micro-controller has detected
that the excess-temperature
comparator has not switched.
The WT Controller PCB is
defective.
24 The reference voltage of the
A/D test channel on the
WT Controller PCB is outside
tolerance.
The WT Power PCB is
defective.
• Check the WT Sensor PCB using the
DrägerService Mode: "Mode d05: Testing the
Mattress Temperature Channel 3 (Babytherm
8010)".
• Replace the WT Sensor PCB, see Repair
Instructions: "Replacing the WT Sensor PCB".
• Replace the WT Controller PCB, see Repair
Instructions: "Replacing the WT Controller
PCB".
• Check the WT Controller PCB using the
DrägerService Mode: "Mode d08: Displaying
the Analog-to-Digital Converter Test Channel".
• Replace the WT Controller PCB, see Repair
Instructions: "Replacing the WT Controller
PCB".
• Replace the WT Power PCB, see Repair
Instructions: "Replacing the WT Power PCB".
25 The GoldCap capacitor or the
charging circuit of the
GoldCap capacitor on the
WT Power PCB is defective.
The GoldCap capacitor
charging circuit ON/OFF
switching element or the A/D
channel "VIN7" on the
WT Controller PCB is
defective.
26 The power supply to the
5V LED or the analog switch on
the WT Power PCB is faulty.
• Check the WT Power PCB:
− Repair Instructions: "Checking the WT
Power PCB".
− DrägerService Mode: "Mode d07: Displaying
the GoldCap Voltage".
• Replace the WT Power PCB, see Repair
Instructions: "Replacing the WT Power PCB".
• Replace the WT Controller PCB, see Repair
Instructions: "Replacing the WT Controller
PCB".
• Check the LED voltage on the WT Power PCB
in the DrägerService Mode: "Mode d09:
Displaying the LED Voltage".
• Measure the LED voltage "5 VLED", see Repair
Instructions: "Checking the WT Power PCB".
• Replace the WT Power PCB, see Repair
Instructions: "Replacing the WT Power PCB".
For internal use only. Copyright reserved.
GBR6132300FL1.fm 10.09.99
6132.300 Babytherm 8004/Babytherm 8010 08/99 Error List Page 12
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Dräger Medizintechnik
Error Cause Corrective Measure
The A/D converter channel
"VIN7" on the
WT Controller PCB is
defective.
30 The safety relay (K301) or the
feedback signal of the
WT Power PCB is faulty.
• Replace the WT Controller PCB, see Repair
Instructions: "Replacing the WT Controller
PCB".
Check the safety relay (K301) as follows:
• DrägerService Mode: Select "Mode d13:
Testing the Solid State Relay of the Mattress
Heater (Babytherm 8010)" and switch safety
relay on; to do so, press the Check key.
• DrägerService Mode: Select "Mode d13:
Testing the Solid State Relay of the Mattress
Heater (Babytherm 8010)" and switch safety
relay off; to do so, press the Check key.
• DrägerService Mode: Select "Mode d14:
Switching the Mattress Heater On/Off
(Babytherm 8010)" and switch mattress heater
on; to do so, press the Check key.
If in the DS Mode, test d14, the mattress heater
feedback signal "Heater on" is displayed, the
WT Power PCB is defective.
Reading of acknowledgment
signal on the
WT Controller PCB is faulty.
• Check the WT Power PCB, see Repair
Instructions: "Checking the WT Power PCB".
• Replace the WT Power PCB, see Repair
Instructions: "Replacing the WT Power PCB".
• Check the WT Controller PCB using the
Repair Instructions: "Checking the
WT Controller PCB".
• Replace the WT Controller PCB, see Repair
Instructions: "Replacing the WT Controller
PCB".
For internal use only. Copyright reserved.
GBR6132300FL1.fm 10.09.99
6132.300 Babytherm 8004/Babytherm 8010 08/99 Error List Page 13
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Dräger Medizintechnik
Error Cause Corrective Measure
31 The mattress heater cannot be
switched off. The safety relay
(K301), the Triac control, the
Triac, or the feedback signal of
the WT Power PCB is faulty.
Check the safety relay (K301) as follows:
• DrägerService Mode: Select "Mode d13:
Testing the Solid State Relay of the Mattress
Heater (Babytherm 8010)" and switch safety
relay on; to do so, press the Check key.
• DrägerService Mode: Select "Mode d13:
Testing the Solid State Relay of the Mattress
Heater (Babytherm 8010)" and switch safety
relay off; to do so, press the Check key.
• DrägerService Mode: Select "Mode d14:
Switching the Mattress Heater On/Off
(Babytherm 8010)" and switch mattress heater
on; to do so, press the Check key.
If in the DS Mode, test d14, the mattress heater
feedback signal "Heater on" is displayed, the
WT Power PCB is defective.
• Check the WT Power PCB, see Repair
Instructions: "Checking the WT Power PCB".
• Replace the WT Power PCB, see "Replacing
the WT Power PCB".
The mattress heater feedback
signal on the
WT Controller PCB is faulty.
• Check the WT Controller PCB using the
Repair Instructions: "Checking the
WT Controller PCB".
• Replace the WT Controller PCB, see Repair
Instructions: "Replacing the WT Controller
PCB".
For internal use only. Copyright reserved.
GBR6132300FL1.fm 10.09.99
6132.300 Babytherm 8004/Babytherm 8010 08/99 Error List Page 14
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Dräger Medizintechnik
Error Cause Corrective Measure
32 The mattress heater cannot be
switched on.
The fuse (F11) on the
WT Power PCB is defective.
The mattress heater is not
connected.
The safety relay (K301), the
Triac control, the Triac, or the
feedback signal of the mattress
heater on the WT Power PCB
is faulty.
• Replace the fuse (F11) on the WT Power PCB,
see Repair Instructions: "Checking the WT
Power PCB".
• Checking the mattress heater, see error
number ""70"".
Check the safety relay (K301) as follows:
• DrägerService Mode: Select "Mode d13:
Testing the Solid State Relay of the Mattress
Heater (Babytherm 8010)" and switch safety
relay on.
• DrägerService Mode: Select "Mode d14:
Switching the Mattress Heater On/Off
(Babytherm 8010)" and switch mattress heater
on.
If in the DS Mode, test d14, the mattress heater
feedback signal "Heater off" is displayed, the
WT Power PCB is defective.
• Check the WT Power PCB, see Repair
Instructions: "Checking the WT Power PCB".
The WT Controller PCB is
defective.
• Replace the WT Power PCB, see Repair
Instructions: "Replacing the WT Power PCB".
• Check the WT Controller PCB using the
Repair Instructions: "Checking the
WT Controller PCB".
• Replace the WT Controller PCB, see Repair
Instructions: "Replacing the WT Controller
PCB".
For internal use only. Copyright reserved.
GBR6132300FL1.fm 10.09.99
6132.300 Babytherm 8004/Babytherm 8010 08/99 Error List Page 15
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Dräger Medizintechnik
Error Cause Corrective Measure
33 The safety relay (K4) of the
mattress heater or the
feedback signal of the
WT Relay PCB is faulty.
Check the safety relay (K4) as follows:
• Open the control unit, see Repair Instructions:
"Opening the Control Unit".
• DrägerService Mode: Select "Mode d18:
Testing the Solid State Relay of the Radiant
Heater" and switch safety relay on.
The LED "safety relay (infrared rods)" on the
WT Relay PCB is on.
• DrägerService Mode: Select "Mode d19:
Switching the Radiant Heater On/Off" and
switch radiant heater on.
The LEDs "infrared rods (control)" and "infrared rods
(feedback)" on the WT Relay PCB are flashing.
• DrägerService Mode: Select "Mode d18:
Testing the Solid State Relay of the Radiant
Heater" and switch safety relay off.
The LED "safety relay (infrared rods)" on the
WT Relay PCB has gone off.
• If the LED "safety relay (infrared rods)" has not
gone off, replace the WT Power PCB or the
WT Controller PCB.
• DrägerService Mode: Select "Mode d19:
Switching the Radiant Heater On/Off" and
switch radiant heater on.
If in the DS Mode, test d19, the radiant heater
feedback signal "Heater on" is displayed, the
WT Relay PCB is defective. Replace the
WT Relay PCB, see "Replacing the WT Relay PCB".
• If the LED "infrared rods (feedback)" has come
on, replace the WT Relay PCB, see "Replacing
the WT Relay PCB".
• If the LED "infrared rods (feedback)" has gone
off, replace the WT Power PCB or the
WT Controller PCB.
For internal use only. Copyright reserved.
GBR6132300FL1.fm 10.09.99
6132.300 Babytherm 8004/Babytherm 8010 08/99 Error List Page 16
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Dräger Medizintechnik
Error Cause Corrective Measure
34 The radiant heater cannot be
switched off. The safety relay
(K4) of the radiant heater, the
Triac control, the Triac, the
feedback signal of the radiant
heater, or the WT Relay PCB is
faulty.
Check the safety relay (K4) as follows:
• Open the control unit, see Repair Instructions:
"Opening the Control Unit".
• DrägerService Mode: Select "Mode d18:
Testing the Solid State Relay of the Radiant
Heater" and switch safety relay on.
The LED "safety relay (infrared rods)" on the
WT Relay PCB has come on.
• DrägerService Mode: Select "Mode d19:
Switching the Radiant Heater On/Off" and
switch radiant heater on.
The LEDs "infrared rods (control)" and "infrared rods
(feedback)" on the WT Relay PCB are flashing.
• DrägerService Mode: Select "Mode d18:
Testing the Solid State Relay of the Radiant
Heater" and switch safety relay off.
The LED "safety relay (infrared rods)" on the
WT Relay PCB has gone off.
The radiant heater feedback
signal on the
WT Controller PCB is faulty.
• If the LED "safety relay (infrared rods)" has not
gone off, replace the WT Power PCB or the
WT Controller PCB.
• DrägerService Mode: Select "Mode d19:
Switching the Radiant Heater On/Off" and
switch radiant heater on.
If in the DS Mode, test d19, the radiant heater
feedback signal "Heater on" is displayed, the
WT Relay PCB is defective. Replace the
WT Relay PCB, see "Replacing the WT Relay PCB".
• If the LED "infrared rods (feedback)" has come
on, replace the WT Relay PCB, see "Replacing
the WT Relay PCB".
• If the LED "infrared rods (feedback)" has gone
off, replace the WT Power PCB or the
WT Controller PCB.
• Replace the WT Controller PCB, see Repair
Instructions: "Replacing the WT Controller
PCB".
For internal use only. Copyright reserved.
GBR6132300FL1.fm 10.09.99
6132.300 Babytherm 8004/Babytherm 8010 08/99 Error List Page 17
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Dräger Medizintechnik
Error Cause Corrective Measure
35 The radiant heater has not
been switched on or cannot be
switched on.
The fuse (F1) on the
WT Relay PCB is defective.
The safety relay (K4), the Triac
control, the Triac, the feedback
signal of the radiant heater, or
the WT Relay PCB is faulty.
• Check the fuse (F1), which located on the rear
panel of the control unit, and replace it, if
necessary.
Check the safety relay (K4) as follows:
• Open the control unit, see Repair Instructions:
"Opening the Control Unit".
• DrägerService Mode: Select "Mode d18:
Testing the Solid State Relay of the Radiant
Heater" and switch safety relay on.
The LED "safety relay (infrared rods)" on the
WT Relay PCB has come on.
• DrägerService Mode: Select "Mode d19:
Switching the Radiant Heater On/Off" and
switch radiant heater on.
The LEDs "infrared rods (control)" and "infrared rods
(feedback)" on the WT Relay PCB are flashing.
• If the LED "infrared rods (feedback)" does not
flash, replace the WT Relay PCB, see Repair
Instructions: "Replacing the WT Relay PCB".
The WT Controller PCB is
defective.
The WT Power PCB is
defective.
• If the LEDs "infrared rods (feedback)" and
"infrared rods (feedback" do not flash, replace
the WT Power PCB or the WT Controller PCB.
• Check the WT Controller PCB using the
Repair Instructions: "Checking the
WT Controller PCB".
• Replace the WT Controller PCB, see Repair
Instructions: "Replacing the WT Controller
PCB".
• Replace the WT Power PCB, see Repair
Instructions: "Replacing the WT Power PCB".
For internal use only. Copyright reserved.
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6132.300 Babytherm 8004/Babytherm 8010 08/99 Error List Page 18
Page 19
Dräger Medizintechnik
Error Cause Corrective Measure
40 Deviations between write and
read data have occurred.
Text display is faulty. • Check the text display using the DrägerService
Mode "Mode c08: Adjusting the Contrast of the
Text Display".
• Replace the text display, see Repair instructions
"Replacing the Text Display".
The WT Controller PCB is
defective.
41 Software error (text is too long) • Inform the "pediatrics department" MT-DS-TS.
42 Software error (wrong
character set)
43 Software error (unknown
character)
44 Software error (error while
displaying text)
50 The keypad and display
controller (D35) on the
WT Front PCB is faulty.
The WT Front PCB is
defective.
The WT Controller PCB is
defective.
51 Wrong key detected.
• Replace the WT Controller PCB, see Repair
Instructions: "Replacing the WT Controller
PCB".
• Inform the "pediatrics department" MT-DS-TS.
• Inform the "pediatrics department" MT-DS-TS.
• Inform the "pediatrics department" MT-DS-TS.
• Replace the WT Front PCB, see Repair
Instructions "Replacing the WT Front PCB".
• Replace the WT Controller PCB, see Repair
Instructions "Replacing the WT Controller
PCB".
The WT Front PCB is
defective.
External interference. • Remove external interference.
For internal use only. Copyright reserved.
GBR6132300FL1.fm 10.09.99
6132.300 Babytherm 8004/Babytherm 8010 08/99 Error List Page 19
• Check the WT Front PCB, see DrägerService
Mode: "Mode c05: Testing the Keyboard".
• Replace the WT Front PCB or the membrane
keypad, see Repair Instructions: "Replacing the
WT Front PCB".
Page 20
Dräger Medizintechnik
Error Cause Corrective Measure
53 The service jumper on the
WT Controller PCB is in the
wrong position.
The WT Controller PCB is
defective.
54 The "worklight" key is stuck or
defective.
The WT Front PCB is
defective.
55 The "nightlight" key is stuck or
defective.
• Place service jumper in the correct position (pin
2-3), see the following figure.
X12
1
2
3
X1
• Replace the WT Controller PCB, see Repair
Instructions: "Replacing the WT Controller
PCB".
• Check key in the DrägerService Mode: "Mode
c05: Testing the Keyboard" .
• Replace the membrane keypad, if necessary.
• Replace the WT Front PCB, see Repair
Instructions "Replacing the WT Front PCB".
• Check key in the DrägerService Mode: "Mode
c05: Testing the Keyboard" .
The WT Front PCB is
defective.
56 The "phototherapy" key is stuck
or defective.
The WT Front PCB is
defective.
57 The "Check" key is stuck or
defective.
The WT Front PCB is
defective.
58 The "alarm stop" key is stuck or
defective.
• Replace the membrane keypad, if necessary.
• Replace the WT Front PCB, see Repair
Instructions "Replacing the WT Front PCB".
• Check key in the DrägerService Mode: "Mode
c05: Testing the Keyboard" .
• Replace the membrane keypad, if necessary.
• Replace the WT Front PCB, see Repair
Instructions "Replacing the WT Front PCB".
• Check key in the DrägerService Mode: "Mode
c05: Testing the Keyboard" .
• Replace the membrane keypad, if necessary.
• Replace the WT Front PCB, see Repair
Instructions "Replacing the WT Front PCB".
• Check key in the DrägerService Mode: "Mode
c05: Testing the Keyboard" .
• Replace the membrane keypad, if necessary.
For internal use only. Copyright reserved.
GBR6132300FL1.fm 10.09.99
6132.300 Babytherm 8004/Babytherm 8010 08/99 Error List Page 20
Page 21
Dräger Medizintechnik
Error Cause Corrective Measure
The WT Front PCB is
defective.
59 The "plus temp. mattress
heater" key is stuck or
defective.
The WT Front PCB is
defective.
60 The "minus temp. mattress
heater" key is stuck or
defective.
The WT Front PCB is
defective.
61 The "plus skin temperature" key
is stuck or defective.
The WT Front PCB is
defective.
62 The "minus skin temperature"
key is stuck or defective.
• Replace the WT Front PCB, see Repair
Instructions "Replacing the WT Front PCB".
• Check key in the DrägerService Mode: "Mode
c05: Testing the Keyboard" .
• Replace the membrane keypad, if necessary.
• Replace the WT Front PCB, see Repair
Instructions "Replacing the WT Front PCB".
• Check key in the DrägerService Mode: "Mode
c05: Testing the Keyboard" .
• Replace the membrane keypad, if necessary.
• Replace the WT Front PCB, see Repair
Instructions "Replacing the WT Front PCB".
• Check key in the DrägerService Mode: "Mode
c05: Testing the Keyboard" .
• Replace the membrane keypad, if necessary.
• Replace the WT Front PCB, see Repair
Instructions "Replacing the WT Front PCB".
• Check key in the DrägerService Mode: "Mode
c05: Testing the Keyboard" .
The WT Front PCB is
defective.
63 The "plus radiant heater" key is
stuck or defective.
The WT Front PCB is
defective.
64 The "minus radiant heater" key
is stuck or defective.
The WT Front PCB is
defective.
• Replace the membrane keypad, if necessary.
• Replace the WT Front PCB, see Repair
Instructions "Replacing the WT Front PCB".
• Check key in the DrägerService Mode: "Mode
c05: Testing the Keyboard" .
• Replace the membrane keypad, if necessary.
• Replace the WT Front PCB, see Repair
Instructions "Replacing the WT Front PCB".
• Check key in the DrägerService Mode: "Mode
c05: Testing the Keyboard" .
• Replace the membrane keypad, if necessary.
• Replace the WT Front PCB, see Repair
Instructions "Replacing the WT Front PCB".
For internal use only. Copyright reserved.
GBR6132300FL1.fm 10.09.99
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Page 22
Dräger Medizintechnik
Error Cause Corrective Measure
65 The "skin/man selection" key is
stuck or defective.
The WT Front PCB is
defective.
66 The "OK" key is stuck or
defective.
The WT Front PCB is
defective.
67 The "radiant heater on" key is
stuck or defective.
• Check key in the DrägerService Mode: "Mode
c05: Testing the Keyboard" .
• Replace the membrane keypad, if necessary.
• Replace the WT Front PCB, see Repair
Instructions "Replacing the WT Front PCB".
• Check key in the DrägerService Mode: "Mode
c05: Testing the Keyboard" .
• Replace the membrane keypad, if necessary.
• Replace the WT Front PCB, see Repair
Instructions "Replacing the WT Front PCB".
• Check key in the DrägerService Mode: "Mode
c05: Testing the Keyboard" .
• Replace the membrane keypad, if necessary.
The WT Front PCB is
defective.
68 -- not applicable --
69 -- not applicable --
70 The mattress heater is not
switched on.
The fuse "F11" (24 VAC) is
defective.
The WT Controller PCB is
defective.
• Replace the WT Front PCB, see Repair
Instructions "Replacing the WT Front PCB".
• Check fuse "F11"; if necessary, replace fuse on
WT Power PCB.
•Select "Mode d14: Switching the Mattress
Heater On/Off (Babytherm 8010)" and switch
mattress heater on.
• If the control and feedback signal of the
mattress heater is present in the DrägerService
Mode, replace the WT Controller PCB, see
Repair Instructions: "Replacing the WT
Controller PCB".
For internal use only. Copyright reserved.
GBR6132300FL1.fm 10.09.99
6132.300 Babytherm 8004/Babytherm 8010 08/99 Error List Page 22
Page 23
Dräger Medizintechnik
Error Cause Corrective Measure
The WT Power PCB, the cable
connection to the mattress
heater, or hat mattress heater is
defective.
• If the control and feedback signal of the
mattress heater is not present in the
DrägerService Mode, check the mattress
heater using the Repair Instructions: "Checking
the Mattress Control Using Uniboard 40
(Babytherm 8010)", if necessary, replace the
WT Power PCB, see Repair Instructions
"Replacing the WT Power PCB".
For internal use only. Copyright reserved.
GBR6132300FL1.fm 10.09.99
6132.300 Babytherm 8004/Babytherm 8010 08/99 Error List Page 23
Page 24
Dräger Medizintechnik
Error Cause Corrective Measure
71 The radiant heater is not
switched on.
The fuse "F1" is defective. • Check the fuse "F1", which is located on the
rear panel of the control unit, and replace it, if
necessary.
The WT Relay PCB or the
cable connection to the radiant
heater is defective.
Check the safety relay (K4) as follows:
• Open the control unit, see Repair Instructions:
"Opening the Control Unit".
• DrägerService Mode: Select "Mode d18:
Testing the Solid State Relay of the Radiant
Heater" and switch safety relay on.
The LED "safety relay (infrared rods)" on the
WT Relay PCB has come on.
• DrägerService Mode: Select "Mode d19:
Switching the Radiant Heater On/Off" and
switch radiant heater on.
The LEDs "infrared rods (control)" and "infrared rods
(feedback)" on the WT Relay PCB are flashing.
• If the LED "infrared rods (feedback)" does not
flash, check the infrared rods using the Repair
Instructions, see "Checking the Infrared Rods",
and replace the infrared rods, if necessary.
• If the infrared rods are OK, replace the
WT Relay PCB, see Repair Instructions:
"Replacing the WT Relay PCB".
• If the LEDs "infrared rods (feedback)" and
"infrared rods (feedback)" do not flash, replace
the WT Power PCB or the WT Controller PCB.
The WT Controller PCB is
defective.
The WT Power PCB is
defective.
For internal use only. Copyright reserved.
GBR6132300FL1.fm 10.09.99
6132.300 Babytherm 8004/Babytherm 8010 08/99 Error List Page 24
• Replace the WT Controller PCB, see Repair
Instructions: "Replacing the WT Controller
PCB".
• Replace the WT Power PCB, see Repair
Instructions: "Replacing the WT Power PCB".
Page 25
Dräger Medizintechnik
Error Cause Corrective Measure
80 The mattress temperature value
is too low.
The temperature sensor 1 (1st
NTC) of the mattress heater or
the cable connection from the
temperature sensors to the
WT Sensor PCB is defective.
The WT Sensor PCB is
defective.
81 The mattress temperature value
is too low.
The temperature sensor 1 (2nd
NTC) of the mattress heater or
the cable connection from the
temperature sensors to the
WT Sensor PCB is defective.
The WT Sensor PCB is
defective.
• Replace temperature sensor 1.
• Check the WT Sensor PCB using the
DrägerService Mode: "Mode d03: Testing the
Mattress Temperature Channel 1 (Babytherm
8010)".
• Replace the WT Sensor PCB, see Repair
Instructions: "Replacing the WT Sensor PCB".
• Replace temperature sensor 1.
• Check the WT Sensor PCB using the
DrägerService Mode: "Mode d04: Testing the
Mattress Temperature Channel 2 (Babytherm
8010)".
• Replace the WT Sensor PCB, see Repair
Instructions: "Replacing the WT Sensor PCB".
For internal use only. Copyright reserved.
GBR6132300FL1.fm 10.09.99
6132.300 Babytherm 8004/Babytherm 8010 08/99 Error List Page 25
Page 26
Dräger Medizintechnik
Error Cause Corrective Measure
82 The mattress temperature value
is too low.
The temperature sensor 2 (1st
NTC) of the mattress heater or
the cable connection from the
temperature sensors to the
WT Sensor PCB is defective.
The WT Sensor PCB is
defective.
83 The mattress temperature value
is too low.
The temperature sensor 2 (2nd
NTC) of the mattress heater or
the cable connection from the
temperature sensors to the
WT Sensor PCB is defective.
The WT Sensor PCB is
defective.
• Replace temperature sensor 2.
• Check the WT Sensor PCB using the
DrägerService Mode: "Mode d05: Testing the
Mattress Temperature Channel 3 (Babytherm
8010)".
• Replace the WT Sensor PCB, see Repair
Instructions: "Replacing the WT Sensor PCB".
• Replace temperature sensor 2.
• Check the WT Sensor PCB using the
DrägerService Mode: "Mode d06: Testing the
Mattress Temperature Channel 4 (Babytherm
8010)".
84 The mattress temperature value
is too high.
The temperature sensor 1 (1st
NTC) of the mattress heater or
the cable connection from the
temperature sensors to the
WT Sensor PCB is defective.
The WT Sensor PCB is
defective.
• Replace the WT Sensor PCB, see Repair
Instructions: "Replacing the WT Sensor PCB".
• Replace temperature sensor 1.
• Check the WT Sensor PCB using the
DrägerService Mode: "Mode d03: Testing the
Mattress Temperature Channel 1 (Babytherm
8010)".
• Replace the WT Sensor PCB, see Repair
Instructions: "Replacing the WT Sensor PCB".
For internal use only. Copyright reserved.
GBR6132300FL1.fm 10.09.99
6132.300 Babytherm 8004/Babytherm 8010 08/99 Error List Page 26
Page 27
Dräger Medizintechnik
Error Cause Corrective Measure
85 The mattress temperature value
is too high.
The temperature sensor 1 (2nd
NTC) of the mattress heater or
the cable connection from the
temperature sensors to the
WT Sensor PCB is defective.
The WT Sensor PCB is
defective.
86 The mattress temperature value
is too high.
The temperature sensor 2 (1st
NTC) of the mattress heater or
the cable connection from the
temperature sensors to the
WT Sensor PCB is defective.
The WT Sensor PCB is
defective.
• Replace temperature sensor 1.
• Check the WT Sensor PCB using the
DrägerService Mode: "Mode d04: Testing the
Mattress Temperature Channel 2 (Babytherm
8010)".
• Replace the WT Sensor PCB, see Repair
Instructions: "Replacing the WT Sensor PCB".
• Replace temperature sensor 2.
• Check the WT Sensor PCB using the
DrägerService Mode: "Mode d05: Testing the
Mattress Temperature Channel 3 (Babytherm
8010)".
87 The mattress temperature value
is too high.
The temperature sensor 2 (2nd
NTC) of the mattress heater or
the cable connection from the
temperature sensors to the
WT Sensor PCB is defective.
The WT Sensor PCB is
defective.
• Replace the WT Sensor PCB, see Repair
Instructions: "Replacing the WT Sensor PCB".
• Replace temperature sensor 2.
• Check the WT Sensor PCB using the
DrägerService Mode: "Mode d06: Testing the
Mattress Temperature Channel 4 (Babytherm
8010)".
• Replace the WT Sensor PCB, see Repair
Instructions: "Replacing the WT Sensor PCB".
For internal use only. Copyright reserved.
GBR6132300FL1.fm 10.09.99
6132.300 Babytherm 8004/Babytherm 8010 08/99 Error List Page 27
Page 28
Dräger Medizintechnik
Error Cause Corrective Measure
88 The mattress temperature
values are too high.
Temperature measurement on
the WT Sensor PCB is faulty.
Short-circuit between NTCs in
temperature sensor 1 of the
mattress heater or the cable
connection from the
temperature sensors to the
WT Sensor PCB is defective.
89 The mattress temperature
values are too high.
Temperature measurement on
the WT Sensor PCB is faulty.
• Check the WT Sensor PCB using the
DrägerService Mode:
− "Mode d03: Testing the Mattress Temperature
Channel 1 (Babytherm 8010)"
− "Mode d04: Testing the Mattress Temperature
Channel 2 (Babytherm 8010)"
• Replace the WT Sensor PCB, see Repair
Instructions: "Replacing the WT Sensor PCB".
• Check temperature sensors and replace them,
if necessary.
• Check the WT Sensor PCB using the
DrägerService Mode:
− "Mode d05: Testing the Mattress Temperature
Channel 3 (Babytherm 8010)"
Short-circuit between NTCs in
temperature sensor 2 of the
mattress heater or the cable
connection from the
temperature sensors to the
WT Sensor PCB is defective.
− "Mode d06: Testing the Mattress Temperature
Channel 4 (Babytherm 8010)".
• Replace the WT Sensor PCB, see Repair
Instructions: "Replacing the WT Sensor PCB".
• Check temperature sensors and replace them,
if necessary.
For internal use only. Copyright reserved.
GBR6132300FL1.fm 10.09.99
6132.300 Babytherm 8004/Babytherm 8010 08/99 Error List Page 28
Page 29
Dräger Medizintechnik
Error Cause Corrective Measure
90 The temperature difference
between the NTCs of
temp erature sensor 1 is greater
than 0.5 °C.
Temperature measurement on
the WT Sensor PCB is faulty.
Temperature sensor 1 of the
mattress heater or the cable
connection from the
temperature sensors to the
WT Sensor PCB is defective.
91 The temperature difference
between the NTCs of
temp erature sensor 2 is greater
than 0.5 °C.
Temperature measurement on
the WT Sensor PCB is faulty.
• Check the WT Sensor PCB using the
DrägerService Mode:
− "Mode d03: Testing the Mattress Temperature
Channel 1 (Babytherm 8010)"
− "Mode d04: Testing the Mattress Temperature
Channel 2 (Babytherm 8010)".
• Replace the WT Sensor PCB, see Repair
Instructions: "Replacing the WT Sensor PCB".
• Check temperature sensors and replace them,
if necessary.
• Check the WT Sensor PCB using the
DrägerService Mode:
Temperature sensor 2 of the
mattress heater or the cable
connection from the
temperature sensors to the
WT Sensor PCB is defective.
− "Mode d05: Testing the Mattress Temperature
Channel 3 (Babytherm 8010)"
− "Mode d06: Testing the Mattress Temperature
Channel 4 (Babytherm 8010)".
• Replace the WT Sensor PCB, see Repair
Instructions: "Replacing the WT Sensor PCB".
• Check temperature sensors and replace them,
if necessary.
For internal use only. Copyright reserved.
GBR6132300FL1.fm 10.09.99
6132.300 Babytherm 8004/Babytherm 8010 08/99 Error List Page 29
Page 30
Dräger Medizintechnik
Error Cause Corrective Measure
92 The temperature difference
between the mattress
temperature sensors 1 and 2 is
greater than 5 °C.
If errors 90 and 91 do not
appear in the error log, the
following errors may have
occurred:
− There is a cold object on
one half of the heating
plate.
− One half of the mattress
heater is defective.
93 The mattress heater has been
switched off due to excess
temperature (greater than
41. 6 ° C).
There is an external heating
source close to the device.
The mattress heater control of
the WT Power PCB is faulty.
• Remove the object.
• Check the WT Power PCB using the Repair
Instructions: "Checking the WT Power PCB".
• Remove any external heating sources.
• Check the WT Power PCB using the
DrägerService Mode:
− "Mode d13: Testing the Solid State Relay of the
Mattress Heater (Babytherm 8010)"
− "Mode d14: Switching the Mattress Heater
On/Off (Babytherm 8010)".
• Check the WT Power PCB using the Repair
Instructions: "Checking the WT Power PCB".
• Replace the WT Power PCB, see Repair
Instructions: "Replacing the WT Power PCB".
The WT Sensor PCB is
defective.
For internal use only. Copyright reserved.
GBR6132300FL1.fm 10.09.99
6132.300 Babytherm 8004/Babytherm 8010 08/99 Error List Page 30
• Check the WT Sensor PCB in the
DrägerService Mode as follows:
− "Mode d03: Testing the Mattress Temperature
Channel 1 (Babytherm 8010)"
− "Mode d05: Testing the Mattress Temperature
Channel 3 (Babytherm 8010)".
• Replace the WT Sensor PCB, see Repair
Instructions: "Replacing the WT Sensor PCB".
Page 31
Dräger Medizintechnik
Error Cause Corrective Measure
94 The skin-temperature values of
skin-temperature measuring
channel 1 are too high (approx.
48 °C).
Short-circuit fault in skin
temperature sensor 1 or the
cable connection from the skin
temperature sensors to the
WT Sensor PCB is defective.
The WT Sensor PCB is
defective.
95 The skin-temperature values of
skin-temperature measuring
channel 2 are too high (approx.
48 °C).
Short-circuit fault in skin
temperature sensor 2 or the
cable connection from the skin
temperature sensors to the
WT Sensor PCB is defective.
• Check skin temperature sensors and replace
them, if necessary.
• Check the WT Sensor PCB using the
DrägerService Mode: "Mode d16: Displaying
the Skin Temperature Channel 1 and the
Reference Value".
• Replace the WT Sensor PCB, see Repair
Instructions: "Replacing the WT Sensor PCB".
• Check skin temperature sensor and replace it,
if necessary.
The WT Sensor PCB is
defective.
• Check the WT Sensor PCB using the
DrägerService Mode: "Mode d17: Displaying
the Skin Temperature Channel 2 and the
Reference Value".
• Replace the WT Sensor PCB, see Repair
Instructions: "Replacing the WT Sensor PCB".
For internal use only. Copyright reserved.
GBR6132300FL1.fm 10.09.99
6132.300 Babytherm 8004/Babytherm 8010 08/99 Error List Page 31
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