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TROUBLESHOOTING
Troubleshooting with LED Indicator Assistance
(No cycling of appliance power or thermostat call
for heat since appliance failure has occurred)
WARNING
Line Voltage Power
Can cause property
damage, severe injury or
death.
Only a trained, experienced
service technician should
perform this troubleshooting.
LED Status
OFF
No power to system control
Bright-Dim
Normal Operation
This indication shows whenever the system is
powered, unless some abnormal event has
occurred.
2 Flashes
Airflow proving switch remains closed longer than
30 seconds after a call for heat begins.
Combustion air blower is not energized until airflow
proving switch opens
3 Flashes
Airflow proving switch remains open longer than 30
seconds after combustion air blower energized.
System goes into 5-minute delay period, with
combustion air blower off. At the end of the 5-
minute delay, another ignition cycle will begin.
4 Flashes
Limit string open.
Combustion air blower is energized. If control
system indicates Electronic Fan Timer, the heat
speed circulating air fan will be energized until the
limit string resets.
5 Flashes
Flame signal sensed out of proper sequence.
Combustion air blower is energized. If control
system indicates Electronic Fan Timer, the head
speed circulation air fan will be energized after the
selected heat fan on delay.
6 Flashes
System Lockout
After 1 hour lockout reset delay, control will reset
and initiate a new ignition sequence if the call for
heat is still present.
Indicates
1.
Check the system thermostat to make sure it is in an
active call for heat mode. (Do not cycle the
thermostat on and off at this time.)
2.
Remove the appliance burner compartment door.
Do not interrupt the power to the RW9510/RW9520;
RW9610/RW9620 by opening any electrically
interlocked panels.
3.
Observe LED indicator on RW9510/RW9520;
RW9610/RW9620; check and repair the system as
noted in the following table:
Check/Repair
1.
Line voltage input power at L1 and L2 connectors on
Electronic Fan Timer (EFT) or 208907 Terminal Board.
2.
Low voltage (24V) power at 24VAC and COM terminals
on Terminal Board.
3.
Fuse on EFT; if provided.
4.
System wiring hamess in good condition and securely
connected at both ends.
Not applicable
1.
Airflow proving switch stuck closed.
2.
Airflow proving switch miswired or jumpered.
1.
Ignition system control switch must be in the ON
position.
2.
Airflow proving switch operation, tubing, and wiring.
3.
Obstructions or restrictions in appliance air intake or
exhaust flue system that prevent proper combustion air
flow.
1.
Open manual reset or auto reset burner rollout switch.
2.
Open high temperature or auxiliary limit switch.
3.
Limit and rollout switch wiring in good condition and
securely connected.
Flame at main burner
1.
Gas supply off or at too low pressure to operate
appliance
2.
Damaged or broken HSI element
3.
Line voltage HOT leadwire not connected to L1 terminal
on Terminal Board.
4.
Appliance not properly earth grounded.
5.
Flame sense rod contaminated or in incorrect location.
6.
HSI element located in incorrect position.
7.
Hot surface element or flame sense rod wiring in good
condition and properly connected.
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