Mitsubishi PKH-2.5FKA1-E, PKH-3FKA1-E, PKH-4FKSA1-E Service Manual
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
TECHNICAL & SERVICE MANUAL
2001
No.OC271
Wall MountedSeries PKH
Indoor unit
[Model names] [Service Ref.]
PKH-2.5FKA PKH-2.5FKA1-E
PKH-3FKA PKH-3FKA1-E
PKH-4FKSA PKH-4FKSA1-E
CONTENTS
1. TECHNICAL CHANGES·······················2
2. TROUBLESHOOTING··························3
3. PARTS LIST··········································4
This service manual describes
change points and parts list.
Please refer to the OC190 as
to excluding this manual.
INDOOR UNIT
FILTER
CHECK MODE
TEST RUN
REMOTE CONTROLLER
1 TECHNICAL CHANGES
PKH-2.5FKA-E ➔ PKH-2.5FKA1-E
PKH-3FKA-E ➔ PKH-3FKA
PKH-4FKSA-E ➔ PKH-4FKSA1-E
● NOSE has changed by changing its shape.
● UNDER PLATE has changed by changing its shape.
● DRAIN PAN has changed by changing its shape.
● BOX ASSEMBLY has changed by changing its shape.
1-E
2
2 TROUBLESHOOTING
0
10
20
30
40
50
-20 -10 0 10 20 30 40 50
< Thermistor for lower temperature >
Temperature (:)
Resistance (K")
• How to check the parts PKH-2.5FKA1-E, PKH-3FKA1-E, PKH-4FKSA1-E
Parts name Check points
Room temperature
thermistor (RT1)
Pipe temperature
thermistor (RT2)
Disconnect the connector, then measure the resistance using a tester.
(Surrounding temperature 10°C~30°C)
Normal
4.3k'~9.6k'
Abnormal
Open or short
Trans
CNT T CN4T
WHT
1
2
3
YLW
BRN
RED
Fan motor
Relay connector
1
White
3
5
Black
Protector
Vane motor
Orange
4
Red
5
Pink
2
Yellow
Connector
3 6 1
1
2
3
4
Red
M
Brown
1
3
5
Blue
Disconnect the connector and measure the resistance using a tester.
Normal
CNT(1)-(3)
CN4T(1)-(2)
CN4T(3)-(4)
Measure the resistance between the terminals using a tester.
WHT. Approx. 135'
BRN. Approx. 0.5~2.0'
RED. Approx. 1.0~2.0'
Abnormal
Open or short
Normal
Motor terminal
or
Relay connector
Red-White
White-Black
Measure the resistance between the terminals using a tester.
(Surrounding temperature 20°C~30°C)
2.5, 3FKA-E
2.5, 3FKA1-E
99.5'i10%
103.5'i10%
Normal
PKH-
4FKSA-E
4FKSA1-E
62.6'i10%
74.0'i10%
Abnormal
Abnormal
Open or short
Brown-Yellow
Brown-Blue
Red-Orange
186~214'
Open or short
Red-Pink
<Thermistor Characteristic graph>
Thermistor for
lower temperature
Thermistor R0=15k' ±3%
Fixed number of B=3480k' ±2%
Rt=15exp { 3480( ) }
0: 15k'
10: 9.6k'
20: 6.3k'
25: 5.4k'
30: 4.3k'
40: 3.0k'
Room temperature thermistor(RT1)
Pipe temperature thermistor(RT2)
1
273+t
1
273
3
Loading...