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

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
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Fault/Cause/Remedy

Cause
Pipe connections leaking
Incorrect settings on solar
heat controller
Flow (solar-side) too low
Heat exchanger dirty
Reversing valve defect/
connected incorrectly
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
temperature difference)
Bleed heater circuit,
repair blockage,
increase pump power
Close / install
gravity brake
Close insulation
Install / close
gravity brake
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