Immergas ZEUS Maior - Board Indicator Lights and Error Codes; LED Status Indications; Error Code Interpretation

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STZM@ ed 05/04 ZEUS Maior @
Technical DocumentationTechnical Documentation
Indications on the board.
According to their status they indicate:
boiler off (no electricity)
boiler on stand-by (boiler powered electrically, burner not
working)
burner working (gas valve powered)
ignition failure block triggered
Error codes on the CAR
display (if mounted)
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E01
overtemperature safety thermostat triggered (E4) E02
ignition control unit stalled (board-control unit connection
not OK) / flue pressure switch not OK
E14
central heating delivery NTC probe broken (B1) E05
domestic hot water NTC probe broken (B2) E12
no water pressure switch tripped
E10
poor circulation safety device triggered
(circulator blocked)
E27
Remote control not compatible / CAR malfunction
E 31
off
off off
off
off on
on
off on
off on on
off
flashing light on
flashing lights
simultaneously
on
flash.
off on
flash.
off on
flashing lights
alternately
on
flashing light
on on
on
flashing light on
H1 H2 H3 ON
(Yellow LED) (Red LED) (Green LED)