Appendix
50
Installation and maintenance instructions auroCOMPACT 0020233500_01
Status code
Meaning
S.41
Water pressure > 2.8 bar.
S.42
Feedback from the flue non-return flap is blocking burner operation (only in conjunction with multi-functional module ac-
cessory) or condensate pump defective, heat requirement being blocked.
S.46
Operation in comfort protection mode, flame goes out at minimum load.
S.53
Unit in waiting period due to modulation block/operation block as a result of low water pressure (spread between flow
and return too high).
S.54
Unit in waiting period due to operation block as a result of low water pressure (temperature gradient).
S.57
Waiting mode, operation in comfort protection mode.
S.58
Burner modulation due to noise emission/wind.
S.59
Waiting period: Minimum water circulation volume not achieved.
S.61
Gas family check unsuccessful: The coding resistance on the PCB does not match the entered gas group (see also
F.92).
S.62
Gas family check unsuccessful: CO/CO
₂
values at limit. Check combustion.
S.63
Gas family check unsuccessful: Combustion quality outside permissible range (see F.93). Check combustion.
S.76
System pressure too low. Top up water.
S.92
Flow rate sensor test running, heating demands are blocked.
S.96
Return sensor test running, heating demands are blocked.
S.97
Water pressure sensor test running, heating demands are blocked.
S.98
Flow/return sensor test running, heating demands are blocked.
S.105
Low heating flow rate, carry out purging P00 again. (Proklima)
F
Overview of fault codes
Code
Meaning
Cause
F.00
Flow temperature sensor interruption
NTC plug not plugged in or has come loose, multiple plug on the PCB
not plugged in correctly, interruption in cable harness, NTC defective
F.01
Return temperature sensor interruption
NTC plug not plugged in or has come loose, multiple plug on the PCB
not plugged in correctly, interruption in cable harness, NTC defective
F.02
Separation of the cylinder charging sensor in the
plate heat exchanger outlet
NTC defective, NTC cable defective, defective plug connection on NTC
F.03
Cylinder sensor fault
NTC defective, NTC cable defective, defective plug connection on NTC
F.10
Flow temperature sensor short circuit
NTC defective, short circuit in cable harness, cable/housing
F.11
Return temperature sensor short circuit
NTC defective, short circuit in cable harness, cable/housing
F.12
Separation of the cylinder charging sensor in the
plate heat exchanger outlet
NTC defective, short circuit in cable harness, cable/housing
F.13
Cylinder sensor short circuit
NTC defective, short circuit in cable harness, cable/housing
F.20
Safety shutdown: Temperature cut-out
Incorrect earth connection between the cable harness and unit, flow or
return NTC sensor defective (loose connection), stray spark via ignition
cable, ignition plug or ignition electrode, pump blocked, air present
F.22
Safety shutdown: Water deficiency
No or insufficient water in the product, water pressure sensor defective,
cable to pump or water pressure sensor loose/not connected/defective
F.23
Safety shutdown: Temperature spread too great
Pump blocked, insufficient pump output, air in product, flow and return
NTC connected the wrong way round
F.24
Safety shutdown: Temperature rise too fast
Pump blocked, insufficient pump output, air in product, system pressure
too low, non-return valve blocked/incorrectly installed
F.25
Safety shutdown: Flue gas temperature limiter
(accessory for Austria) or other safety compon-
ents on the pre-fitted plug on X20
Break in plug connection for optional flue gas safety cut-out (SCO),
break in cable harness
F.26
Fault: Gas valve assembly without function
Gas valve assembly stepper motor not connected, multiple plug on the
PCB not plugged in correctly, interruption in cable harness, gas valve
assembly stepper motor defective, electronics defective
F.27
Safety shutdown: Recording incorrect flames
Moisture on the electronics, electronics (flame monitor) defective, gas
solenoid valve leaking
