Fault / Cause / Remedy - Wolf SPU-2 Series Assembly Instructions Manual

Fault / Cause / Remedy

Fault
Leakage at buffer
Temperature difference to small at solar
heat exchanger
None / too little discharge of the tank
Undesired cooling down of tank only in
the lower tank area
Undesired cooling down of tank in the
entire tank area
3043757_202005
Cause
Pipe connections leaking
Incorrect settings on solar heat controller
Flow (solar-side) too low
Heat exchanger dirty
Reversing valve defect/ connected in-
correctly
Control of the solar return temperature
rise (SRTA) poorly adjusted/defect
Flow (heating-side) too low
Gravity circulation in the solar circuit
Insulation is open / is not in contact with
the tank
Gravity circulation in the heater circuit
Remedy
Re-seal
Change parameters (in particular control
temperature difference)
Bleed solar circuit Repair blockages
Increase pump power
Cleaning
Restore function
Change parameters (in particular tempe-
rature difference)
Bleed heater circuit, repair blockage,
increase pump power
Close / install
gravity brake
Close insulation
Install / close
gravity brake
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