E09
''NO FEEDBACK FROM
GAS VALVE''
Gas valve may be
broken
.
Shut down
the power
of the
boiler
. Measure the
resistance between connecting
pins of gas valve. Check
whether it is in the
range of 110-120
Ohm
Replace the gas
valve
.
NO
YES
Dismount the gas
valve connector.
Connect the power to the
boiler
. Check
whether the resistance at the
connector ends coming from the circuit
board is in the range of 23-25 V when
the
boiler
is
trying to ignite.
NO
Replace the
main
board.
YES
Replace the gas valve
cable groups.
NO
Check
whether
gas valve cable
connections are proper and
without damage
Replace the gas
valve
.
YES
E12
''EEPROM
CONTROL
FAULT
'
Main board may be
broken.
Replace
main board.
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