42
3064300_201703
Fault
Cause
Remedy
Leaks
Pipe connections leaking
Re-seal the connections
Heat-up time too long Heating water temperature too low; measure at
cylinder flow, not at heat generator
Increase temperature (adjust controller)
Heating circuit not vented
Vent several times (see manual air-vent valve)
Cylinder sensor not in sensor well
Check position of cylinder sensor
No / insufficient
unloading of cylinder
on heating water side
Controller for cylinder return temperature control
poorly adjusted
Change parameters (in particular start
temperature differential)
Diverter valve faulty / incorrectly connected
Re-establish function
Flow rate on heating side too low
Vent heating circuit
Remove blockages
Increase pump rate
36. Troubleshooting – buffer module
CPM-1-70, buffer cylinder SPU-1-200