Nibe S1256 - Page 63

HELPING THE CIRCULATION PUMP TO START
The circulation pump in S1256 has an automatic start help
function. If necessary the pump can be started manually.
In such cases, take the following action:
1. Shut off S1256.
2. Remove the front cover
3. Press in the screw for start help using a screwdriver as
illustrated.
4. With the screw pressed in, turn the screwdriver in any
direction.
5. Start S1256 and check that the circulation pump is
working.
GP1 QM5
The image shows an example of what a circulation pump can look like.
TEMPERATURE SENSOR DATA
Voltage (VDC)Resistance (kOhm)Temperature (°C)
3.04756.20-10
2.88933.020
2.67320.0210
2.39912.5120
2.0838.04530
1.7525.30640
1.4263.58350
1.1362.46760
0.8911.73970
0.6911.24680
PULLING OUT THE COOLING MODULE
The cooling module can be pulled out for service and trans-
port. The images show examples of what a cooling module
might look like.
NOTE
Switch off the heat pump and cut the power with
the safety switch.
Caution
Remove the front cover according to the descrip-
tion on page 7.
1. Close the shut-off valves (EP14-QM31), (EP14-QM32),
(EP14-QM33) and (EP14-QM34).
Drain the compressor module according to the instruc-
tions on page 62
UN
EP14-QM34
EP14-QM31
EP14-QM32
EP14-QM33
2. Remove the insulation.
3. Remove the locking plate.
4. Disconnect the pipe connection under the shut-off valve
(EP14-QM31).
5. Remove the two screws.
6. Disconnect the connectors (XF2), (XF11) and (XF22).
7. Carefully pull out the cooling module.
63Chapter 10 | ServiceNIBE S1256