Electrolux EN18WI30LS Service Manual page 20

<EN19WI30LS, EP19WI30LS>
Error Codes and Checkpoints
Description
(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 drain trap abnormality
(F) 30 Air inlet thermistor abnormality
(F) 31 Inlet thermistor abnormality
(F) 32 Outlet thermistor abnormality
(F) 33 Heat exchanger thermistor abnormality Measure the resistance through the heat exchanger thermistor (7).
(F) 35 Exhaust thermistor abnormality
(F) 51 Failure of gas solenoid valve
(other than drive circuit)
(F) 61 Fan motor abnormality
(F) 65 Heat exchanger flow control valve
abnormality
(F) 66 Bypass flow control valve abnormality
(F) 70 Circuit board abnormality
(F) 71 Gas solenoid valve drive circuit
abnormality
(F) 72 Flame rod circuit abnormality
(Detection of flame when no flame is
present)
(F) 73 Circuit board setting abnormality
(Dip switch, Hard dip switches, etc)
760 Remote controller transmission
abnormality
F76 Multi-system communication error
(F) 90 Combustion abnormality
(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.
Note 2) The ON/OFF condition of the neutralizer water level electrode can be checked using the maintenance monitors. When maintenance monitor number 19
reads "000", the condition of the electrode is normal. When this monitor reads "001", the condition of the electrode is abnormal.
Diagnosis Point (Trouble Point)
Check for abnormal combustion.
Check flue for blockage or obstruction.
Check the gas supply piping and pressure. Check for igniter spark
(12). Check gas solenoid valves (13, 14, 15, 16). Check flame rod
(17). Check ground, paying special attention to 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 (17).
Check ground, especially on circuit board.
Check for melting or damage to the thermal fuse (1).
Check for improper connection of thermal fuse.
Measure the resistance through the outlet thermistor (6).
Check for gas proportioning valve trouble (16).
Check if high limit switch is triggered (20).
Check for improper connection of high limit switch.
Check for Condensate Drain trap blockage (22).
Check for drain pipe blockage.
Check for improper connection of water level electrode.
Measure the resistance through the air inlet thermistor (21).
Check for an open or short circuit.
Check for improper connection of air inlet thermistor.
Measure the resistance through the inlet thermistor (5).
Check for an open or short circuit.
Check for improper connection of inlet thermistor.
Measure the resistance through the outlet thermistor (6).
Check for an open or short circuit.
Check for improper connection of outlet thermistor.
Check for an open or short circuit.
Check for improper connection of heat exchanger thermistor.
Measure the resistance through the exhaust thermistor (8).
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). Check for improper
connection of the fan. Check voltage from circuit board.
Check that the main flow control valve is functioning (2).
Check for improper connection of the valve.
Check that the Bypass control valve is functioning (3).
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.
Check the Hard dip switches(located on circuit board).
Check connection from remote controller to circuit board.
Check remote controller and circuit board for damage.
Check for proper connection of quick connect cord.
Check for abnormal combustion.
Check flue 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.
20
Remarks
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.
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.
To reset this error code, the power needs to
be disconnected and then reconnected.
Note 2)
Note 1)
Note 1)
Note 1)
Note 1)
Note 1)