Bosch 250SXO, 2400EO, ESO, 2400E, 250SX User Manual
Bosch Remote Control for
GWH-635-ES/ESO/250SX/250SXO/2400E/2400EO
6 720 606 990 (07.01) JS
Contents
Contents
1 Declaration of conformity FCC 3
2 Remote control data 4
3 Parts supplied 4
4 Using the remote control 4
4.1 Description of the LCD 4
4.2 Remote control transceiver PCB
installation 5
4.3 Remote control activation 7
4.3.1 AF board 7
4.3.2 SU board 8
4.4 Hot water temperature adjustment
by remote control 9
4.5 "Program" button on the remote
control 9
4.6 "Priority" function 10
4.7 Error messages 11
5 Troubleshooting 12
5.1 Replacing batteries 12
5.2 Cleaning 12
5.3 Troubleshooting 12
6Notes 15
2
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Safety instructions
Safety instructions
B Read the following instructions very
carefully to ensure correct
operation.
B Follow safety instructions.
Caution: Any
changes or
modifications not
expressly approved
by the party
responsible for
compliance could
void the user’s
authority to operate
the equipment.
Caution: the remote control is
waterproof and can
also be used in the
shower . Nevertheless, you
should ensure it is
not immersed in
water, for instance
in the bathtub .
1 Declaration of con-
formity FCC
This device meets the requirements of
FCC Directives.
Caution: The
remote control can
be used only in the
following countries:
United States of
America and
Canada.
This device complies with Part 15 of
the FCC rules. Operation is subject to
the following two conditions: (1) This
device may not cause harmful
interference, and (2) this device must
accept any interference received,
including interference that may cause
undesired operation.
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3
Remote control data
2 Remote control data
Remote control for temperature adjustment of Bosch water heaters GWH635-ES/ESO/250 SX/250SXO/
2400E/2400EO.
Technical Data:
Battery power
supply
Frequency 915 MHz
Type of
protection
Alkaline AA LR 6
2 x 1.5V
IP X6
User range 98 ft (30 m)
Further Indications:
Remote
control
Up to 6 remote controls
can be programmed for
one single appliance..
3 Parts supplied
1 Remote control
2 Remote control transceiver PCB
3 Support block
4 PCB connection cable
4 Using the remote con-
trol
4.1 Description of the LCD
Fig. 2 Multifunctional LCD
1 Displays temperature, error codes
and functions
2 "Remote control in operation"
indication (signal arriving at remote
control)
3 Device in operation (with burner
on)
4 Temperature measurement unit
(possible in °C and °F)
5 Remote control battery level
indication (weak signal coming
from the remote control)
6 Priority function (temperature
cannot be modified by other user
when water is running)
7 "Error code" symbol
Fig. 1 Parts
4
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Using the remote control
4.2 Remote control transceiver PCB installation
Warning: For safe-
ty reasons, disconnect the power
supply to the water
heater before performing installation.
Pre-installation preparation
B Disconnect power supply to heater.
B Remove plastic decals on front
panel.
B Loosen two Philips head screws
located behind plastic decals.
B Lift front cover upward and remove.
Fig. 3
B Remove the 5 screws on the front
retaining bar (see Fig. 3, pos. 1 and
2) being careful not to damage the
foam sealant material on it.
B Remove control unit auxiliary cover
(Fig. 3, pos. 4).
B Remove the two electrical strip
connectors inside the auxiliary cover
(Fig. see diagram below) and then
loosen the 110V power supply cord
retaining nut located underneath the
heater. Once loosened, the power
cord can be pulled up through the
heater to provide sufficient slack.
Once auxiliary cover
is off, pull off the two
electrical strip
connectors from the
board. Once off, the
wiring harness can
be removed from the
case by pulling their
rubber seals
outward.
Fig. 4 Electrical strip connectors
B At the ignition electrodes, pull off the
2 yellow igniter wires that come from
the top of the control board (Fig. 3,
pos. 3). Then pull the complete
control board forward and out of the
heater, pull up the power supply
cord further if more slack is needed.
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