Condair Control GS OC-C Series, Руководство по эксплуатации, Страница: 33 / 40

6.2 Warning messages
Warning message Description of malfunction Trouble shooting
IMW-X: Ignition Module The ignition module X has not ignited
within 4 minutes after activation.
Corrective action by unit : the unit will
index the next available burner in the
sequence.
1. Check problematic burner through
combustion chamber sight port for red
hot igniter and flame.
. If igniter is not red hot check igniter
connection. Replace igniter if neces-
sary.
. If igniter is red hot but now flame is vis-
ible, check for 4 VAC at gas valve.
4. Verify that gas supply line is connected
and gas line open.
5. If flame is visible, check electric con-
nection of flame sensor. Ensure supply
voltage L1 is not wired to N.
APW-X: Air Proving open Air proving switch X has opened during
operation of the unit.
Corrective action by unit : unit will inter-
rupt operation and retry max. three times.
After third try a fault is generated.
1. Make sure air proving switch is properly
connected to driver board.
. Make sure pressure tubes are se-
cure.
. Make sure air flows into blower dur-
ing blower operation. If no suction is
detectable, the blower might need to
be replaced.
4. Perform diagnostic output test on
blower RPM to verify that air proving
switches remain closed during opera-
tion
5. If air proving switch does not close
during operation it might need to be
replaced.
AOW-X: Air Proving open
The air proving switch was open during
the ignition sequence.
Corrective action by unit : unit will inter-
rupt operation and retry max. three times.
After third try a fault is generated.
1. Make sure air proving switch is properly
connected to driver board.
. Make sure pressure tubes are se-
cure.
. Make sure air flows into blower dur-
ing blower operation. If no suction is
detectable, the blower might need to
be replaced.
4. Perform diagnostic output test on
blower RPM to verify that air proving
switches remain closed during opera-
tion
5. If air proving switch does not close
during operation it might need to be
replaced.
BHW-X: Blower RPM high The speed of blower X has been higher
than the speed of the leading blower for
more than five seconds.
Corrective action by unit : the unit con-
tinues to monitor the blower speed.
1. Make sure blower in question is cor-
rectly connected and it is receiving
correct voltage.
. Check operation of blowers in the diag-
nostic output test for abnormalities.
. Make sure there are no restrictions on
lead blower. Lead blower speed could
be reduced due to wear.
4. Check if blower can be turned by hand
without mechanical resistance.