Easy Radiant Works ED-40U Operating Instructions Manual Download Page 42

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AB2017 TROUBLE SHOOTING

LED STATUS

INDICATES

CHECK/REPAIR

OFF

No power to system control.

1. Line voltage input connectors on module.
2. Low voltage 24V and COM connection on module.
3. System wiring harness in good condition and securely connected
at both ends.
4. Electrical supply is live and functioning properly.

STEADY ON

Normal Operation.
LED is solidly lit when unit is powered, unless
some normal abnormal event has occurred.

Not applicable.

1 FLASH

Combustion intake airflow proving switch stuck
closed at call for heat.

1. Combustion intake airflow proving switch stuck closed.
2. Combustion intake airflow proving switch mis-wired or jumpered.
3. Combustion intake airflow proving switch operation, tubing, and
wiring.

2 FLASHES

Airflow proving switch circuit remained open for
30 seconds after blower energized.

1. Airflow proving switch stuck open.
2. Combustion airflow proving switch mis-wired or jumpered.
3. Blocked flue airflow proving switch stuck open during ignition
sequence due to malfunction, blockage, or mis-wiring.
4. Obstructions or restrictions in appliance air intake system that
prevent proper combustion air flow.
5. Airflow proving switch operation, tubing, and wiring.

3 FLASHES

Ignition trial lockout.
Appliance has failed ignition trial 3 consecutive
times. System will reset after 20 minute delay, then
initiate a new ignition sequence if the call for heat
is still present.

1. Gas supply off or at too low pressure to operate appliance.
2. Damaged or broken HSI element.
3. Line voltage HOT connector not connected to module, or electrical
supply failure.
4. Appliance not properly earth grounded.
5. Flame sense rod contaminated or in incorrect position.
6. HSI element located in incorrect position.
7. Hot surface element or flame sense rod wiring in good condition
and properly connected.
8. 3 consecutive ignition failures for any cause.

4 FLASHES

Flame sensed out of sequence or internal fault.
Module self diagnostics have detected a critical
fault in module programming/operation.

Replace ignition module.

AND

CHECK / REPAIR

Combustion air blower
does not energize.

1 Flash code does not come on 30 seconds
after call for heat starts.

1. Combustion air blower wiring, combustion intake airflow proving
switch wiring.
2. Combustion air blower.

Combustion air blower
does not energize.

1 Flash code does come on 30 seconds
after call for heat starts.

1. Airflow proving switch stuck closed.
2. Airflow proving switch mis-wired or jumpered.

Combustion air blower
energized.

2 Flash code does not come on after 30
seconds.

Wait for pre-purge time to expire.

2 Flash code comes on 30
seconds after combustion
air blower is energized.

Combustions air blower turns off.

1. Airflow proving switch stuck in open position.
2. Airflow proving switch tubing and wiring.
3. Obstruction or restrictions in appliance air intake or exhaust flue
system that prevent proper combustion air flow.

30 second prepurge time
has expired.

HSI Element does not glow red within 10
to 15 seconds.

1. Broken or damaged HSI element.
2. Broken or damaged HSI element lead wires.
3. Failure to power HSI element.
4. Check voltage on HSI lead to verify module is sending correct
output.

HSI elements is glowing
red

No other observable control system action.

1. Flame sensor moisture detected. Wait for HSI element to
warm/dry flame sensor. Ignition sequence will commence when no
moisture is detected on flame sensor.