Troubleshooting; Error Codes And Checkpoints - Electrolux EN18WI30LS Service Manual

8. Troubleshooting

<EN18WI30LS / EP18WI30LS>

Error Codes and Checkpoints

Display Description
(F) 05 Service reminder
(F) 10 Combustion abnormality
(BTU Drop)
(Unit Continues Working)
(F) 11 Ignition failure
(Initial flame fault detection)
(F) 12
Flame rod does not detect flame
(Flame fault detection)
(F) 14
Overheat Prevention Device
(Thermal Fuse) triggered
(F) 16 Abnormally high output
temperature
(F) 20
High limit switch triggered
(F) 29
Condensate trap clogging
(F) 30 Air inlet thermistor abnormality
(F) 31 Inlet thermistor abnormality
(F) 32
Outlet thermistor abnormality
Heat exchanger thermistor
(F) 33
abnormality
Exhaust thermistor abnormality
(F) 35
(F) 51
Failure of gas solenoid valve
(other than drive circuit)
(F) 61 Fan motor abnormality
Main flow control valve
(F) 65
abnormality
(F) 70 Circuit board abnormality
Gas solenoid valve drive circuit
(F) 71
abnormality
Flame rod circuit abnormality
(F) 72
(Detection of flame when no
flame is present)
(F) 73 Circuit board setting abnormality
(Dip switch setting, etc.)
F76 Multi-system communication
error
Remote controller transmission
760
abnormality
Combustion abnormality
(F) 90
(Warning indication)
Combustion abnormality
(Unit shuts off)
(F) 91
Improper gas type
(F) 94 Exhaust temperature is too high
(F) 99 Combustion abnormality
(Unit shuts off)
*In a quick connect multi-system, "F##"(except F76) indicates an error code from the secondary unit (unit without a remote).
Note 1)
This error code is not mentioned in the flowchart.
Diagnosis Point (Trouble Point)
The predetermined service period has been reached. Flush the
heat exchanger and/or service the water treatment device.
Check for abnormal combustion.
Check flue for blockage or obstruction.
Check the gas supply piping and pressure. Check for igniter
spark ( ). Check gas solenoid valves (
12
Check flame rod ( ). Check ground, paying special attention to
16
the ground connection to the circuit board.
Check for accidental extinction of the flame. Check for abnormal
combustion. Check gas solenoid valves. Check flame rod (
Check ground, especially on circuit board.
Check for melting or damage to the thermal fuse (
Check for improper connection of thermal fuse.
Measure the resistance through the outlet thermistor (
Check for proportional gas valve trouble (
Check if high limit switch is triggered (
Check for improper connection of high limit switch.
Check if the drain line is clogged or frozen (
Measure the resistance through the air inlet thermistor (
Check for an open or short circuit.
Check for improper connection of air inlet thermistor.
Measure the resistance through the inlet thermistor (
Check for an open or short circuit.
Check for improper connection of inlet thermistor.
Measure the resistance through the outlet thermistor (
Check for an open or short circuit.
Check for improper connection of outlet thermistor.
Measure the resistance through the heat exchanger thermistor
( ). Check for an open or short circuit.
7
Check for improper connection of heat exchanger thermistor.
Measure the resistance through the exhaust thermistor (
Check for an open or short circuit.
Check for improper connection of exhaust thermistor.
Check for proper connection of the gas solenoid valves.
Check for damage to the gas solenoid valve connections.
Check that the fan is rotating and check the pulse frequency from
the fan rotational frequency sensor (
10 11
connection of the fan. Check voltage from circuit board.
Check that the main flow control valve is functioning (
Check for improper connection of the valve.
Circuit board failure
Check for damage to the gas solenoid valve drive circuit on the
circuit board.
Measure the current from the flame rod when there is no flame
( 9 ).
Check for a ground fault.
Check for proper setting of maintenance writers on circuit board.
Check the circuit board (microcomputer) for damage. Check the
dip switch settings.
(ex.high elevation, vent length, etc.).
Check for proper connection of quick connect cord.
Check connection from remote controller to circuit board.
Check remote controller and circuit board for damage.
Check for abnormal combustion.
Check flue and air inlet for blockage or obstruction.
Check for abnormal combustion. Check flue for blockage or
obstruction. Check that flame ignites all across the burner.
Check gas type
Check for abnormal combustion ( ).
8
Check for abnormal combustion.
Check flue for blockage or obstruction.
19
To reset this error code, refer to the "Water
Treatment" section.
To reset this error code, the power needs to
be disconnected and then reconnected.
).
1 , 3 1 , 4 1 5
).
16
1 ).
).
6
).
15
).
18 To reset this error code, the power needs to
be disconnected and then reconnected.
4 ).
).
17
).
5
).
6
).
8
). Check for improper
). To reset this error code, the power needs to
2
be disconnected and then reconnected.
To reset this error code, the power needs to
be disconnected and then reconnected.
Note 1)
Note 1)
Note 1)
To reset this error code, the power needs to
be disconnected and then reconnected.
To reset this error code, the power needs to
be disconnected and then reconnected.
To reset this error code, the power needs to
be disconnected and then reconnected.
To reset this error code, the power needs to
be disconnected and then reconnected.
Remarks