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HELPING THE CIRCULATION PUMP TO START
The circulation pump in S1256PC has an automatic start
help function. If necessary the pump can be started manu-
ally. In such cases, take the following action:
1.
Shut off S1256PC.
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 S1256PC and check that the circulation pump is
working.
GP1
The image shows an example of what a circulation pump can look like.
TEMPERATURE SENSOR DATA
Temperature (°C)
Resistance (kOhm)
-10
56.20
0
33.02
10
20.02
20
12.51
30
8.045
40
5.306
50
3.583
60
2.467
70
1.739
80
1.246
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.
NIBE S1256PC
QM5
Voltage (VDC)
3.047
2.889
2.673
2.399
2.083
1.752
1.426
1.136
0.891
0.691
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 57
EP14-QM31
EP14-QM34
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.
EP14-QM33
EP14-QM32
Chapter 10 | Service
59
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