Wolf COB - Troubleshooting

59
3062547_201507
34. Troubleshooting
Fault
code
Fault Cause Remedy
40 Insufcient water
pressure
The pressure switch does not switch on, water
pressure is too low (< 0.8 bar)
Check system pressure >1.5 bar
Check water pressure switch, check lead,
press reset
42 Condensate pump is
not pumping anything
out
Faulty condensate pump, drain line blocked, no
power supply to pump
Check pump, check drain line, check
mains plug and fuse
52 Max. cylinder heating
time exceeded
Set cylinder temperature is not being reached,
insufcient ow
Vent cylinder, increase cylinder heating
time (HG20), check cylinder sensor
assembly
78 Header sensor fault Faulty header sensor or lead Check sensor and lead
Insufcient heating
system heating,
frequent cycling
Air in the heating or cylinder system Vent radiators, vent cylinder primary
circuit, vent heating circuit pumps, vent
boiler
No DHW heating Sensor is not detected by the boiler Switch boiler off and on; sensor will be
detected on restarting