E Overview Of Fault Codes - Glow-worm Energy7 12r-A H-GB Installation And Maintenance Instructions Manual

Status code
S.20 Domestic hot water mode: Requirement
S.21 Domestic hot water mode: Fan prerun
S.22 Domestic hot water mode: Pump prerun
S.23 Domestic hot water mode: Burner ignition
S.24 DHW mode: Burner on
S.25 DHW mode: Pump/fan overrun
S.26 DHW mode: Fan overrun
S.27 DHW mode: Pump overrun
S.28 Domestic hot water mode: Temporary shutdown of the burner
S.30 Room thermostat is blocking heating mode.
S.31 No heating demand: Summer mode, eBUS control, waiting period
S.32 Fan waiting time: Fan speed outside of the tolerance values
S.34 Frost protection active
S.39 Underfloor heating contact open
S.42 Flue non-return flap closed
S.46 Frost protection mode (Comfort): Minimum load
S.53 Product in waiting period/operating block function due to water deficiency (flow/return spread too large)
S.54 Waiting period: Water deficiency in the circuit (flow/return spread too large)
S.88 Product purging active
S.91 Maintenance: Demo mode
S.96 Automatic test programme: Return temperature sensor, heating demands blocked.
S.98 Automatic test programme: Return temperature sensor, heating demands blocked.
S.99 Internal automatic test programmes
S.108 Purging the combustion chamber, fan in operation
S.109 Product's standby mode activated
E Overview of fault codes
Fault code Meaning
F.00 Fault: Flow temperature sensor
F.01 Fault: Return temperature sensor
F.10 Short circuit: Flow temperature sensor
F.11 Short circuit: Return temperature sensor
F.12 and Short circuit: Cylinder temperature
F.91 sensor
F.13 Short circuit: Temperature sensor for the
domestic hot water cylinder
F.20 Safety shutdown: Overheating temperat-
ure reached
F.23 Safety shutdown: Temperature spread
too great (NTC1/NTC2)
F.24 Safety shutdown: Temperature rise too
fast
F.25 Safety shutdown: Flue gas temperature
too high
F.27 Safety shutdown: Fault in flame detec-
tion
40
Meaning
Other displays
Possible cause
NTC plug not plugged in or has come loose, multiple plug on the PCB not
plugged in correctly, interruption in cable harness, NTC sensor defective
NTC plug not plugged in or has come loose, multiple plug on the PCB not
plugged in correctly, interruption in cable harness, NTC sensor defective
NTC sensor defective, short circuit in the cable harness, cable/housing
NTC sensor defective, short circuit in the cable harness, cable/housing
NTC sensor defective, short circuit in the cable harness, cable/housing
NTC sensor defective, short circuit in the cable harness, cable/housing
Incorrect earth connection between cable harness and product, flow or return
NTC defective (loose connection), stray spark via ignition cable, ignition plug
or ignition electrode
Pump blocked, insufficient pump output, air in product, flow and return NTC
sensors connected the wrong way round
Pump blocked, insufficient pump output, air in product, system pressure too
low, non-return valve blocked/incorrectly installed
Break in plug connection for optional flue gas safety cut-out (SCO), break in
cable harness
Moisture on the electronics, electronics (flame monitor) defective, gas solen-
oid valve leaking
Installation and maintenance instructions Energy 0020300877_02
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