46
SHUTDOWN
46
APPENDIX
Error no. Error Description Checks Solutions
13 APS_NOT_OPEN Air pressure switch not
working
14 APS_NOT_CLOSED Air pressure switch not
working
15 MAX_TEMP_ERROR The external overheat
protection is enabled or the
T_Supply sensor measures a
temperature of over
100°C (212°F)
a- Check module water
temp.
b- Check the pump to verify
the ow circulation;
c- Check if the valves on
hydraulic circuit are open;
d- Check the high limit
switch.
a- Change the pump or
restart it;
b- Open the valves on
hydraulic circuit;
c- Change the high limit
switch.
16 FLUE_GAS_ERROR Flue temperature exceeded
the maximum ue
temperature
17 STACK_ERROR Internal software error Replace the power control
board
18 INSTRUCTION_ERROR Internal software error Replace the power control
board
19 ION_CHECK_FAILED Internal software error Replace the power control
board
20 FLAME_OUT_TOO_LATE Flame still present 10
seconds after closing the gas
valve
Replace the gas valve
21 FLAME_BEFORE_IGNIT Flame is detected before
ignition
Replace the gas valve
22 TOO_MANY_FLAME_LOSS Three ame failures during
one demand cycle
a- Check the integrity of
the wire connections of the
spark and the earth on heat
exchanger
b- check ionization signal
while running
a- If wires are damaged,
replace them
b- check for proper
combustion settings - if
correct replace spark/
amerod.
23 CORRUPTED_ERROR_NR Error code RAM byte was
corrupted to an unknown
error code
24 FLUE_SWITCH_NOT_CLOSING The blocked ue sensor is
not closed within 10 minutes
29 PSM_ERROR Internal software error
30 REGISTER_ERROR Internal software error Replace the power control
board
33 LWCO_1_ERROR Low Water Cut-Off 1 error a- Check to ensure all valves
are open, pump is running.
b- Check the wiring
between the controller and
the LWCO probe.
a- Verify water is in the
boiler.
b- Verify good connection
between control module
and low water probe.
34 LWCO_2_ERROR Low Water Cut-Off 2 error NA NA
35 GAS_PRESSURE_ERROR Gas pressure switch is open.
This can either be the High
or Low Gas Pressure Switch.
a- Check gas pressure to
ensure it is correct and in
the recommended range for
the unit.
b- Check with as many
modules on as possible to
ensure supply connections
are sized properly.
36 AIR_DAMPER_LOCKING Air Damper feedback is not
received when the relative
output is closed for the
fourth time.