Condair GC 130, Operation And Maintenance Manual

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63
Fault Isolation Condair GS
xxxxxxx_A_EN_1905_Condair-GS_OM
Code
Message Probable Cause
Warning Fault
– E138 Over-Tempera -
ture Fault
The exhaust or tank safety sensor has exceeded the safety limit. The unit will not operate
when this fault condition is active. Fix the problem first, then reset the over-temperature
switch as described in "Resetting Fault Status" on page 66 .
Unit may be operating with incorrect water level.
– Check that the float chamber is operating properly.
Exhaust vent may be blocked.
– Make sure that the exhaust vent is free of obstructions.
Dual fill valves may not be working properly.
– Refer to the troubleshooting procedure for fault code “ Fill Check Fault “.
Thermocouple wire may be damaged.
– Visually inspect the thermocouple wire for kinks or other damage.
Excess scale build-up on the coils of the primary heat-exchanger.
– Remove scale build-up – refer to "Cleaning the Tank" on page 51 .
Temperature of the water supply may be too high.
– Check that the temperature of the water supply. For optimal performance, temperature
must not exceed 21 °C(70 °F).
Exhaust condensate removal (on CS model) may be blocked.
– Check for blockages in the exhaust drain line in the unit.
W139 – No Burners
Available
All burners have been disabled through the control software. No burners are available for
operation of the unit. The unit will not respond to a demand until one or more burners is
enabled.
Burners disabled.
– Enable the
Burners
in the control software.
– E140 Keep Warm
Fault
The Keep Warm function is activated, but the tank temperature has not increased in the
allotted time.
Loose connection.
– Check the tank temperature sensor connection.
Burners may be disabled.
– Check that no more than one burner is disabled in the control software.
Scale build-up on the temperature sensor.
CAUTION! The tank may be hot to the touch.
– Carefully remove scale build-up on the sensor as described in
"Cleaning the Tank" on
page 51 .
Defective temperature sensor.
CAUTION! The tank may be hot to the touch.
– Check the tank to see if it is hot. Then check the electrical signal to the sensor.
Replace the sensor, if defective.
W141 Ignition Fail The ignition module identified has failed to ignite within the allotted time (4 minutes). The
unit will index to next available burner in the sequence.
Loose wiring, or defective spark-igniter.
– Visually check the sight port of problematic burner.
– Check if sparking can be seen or heard during the ignition sequence.
– Check if the burner ignites, but stops after 3 seconds.
– Remove and clean oxidation on the igniter.
– Check the distance between the ‘spark gap’.
– Check the spark-igniter connection. If necessary, replace the spark-igniter.
Gas supply problem.
– Check the gas supply is open.
– Check for 24 VAC at the gas valve.
– Check the status LED on the ignition control module – three flashes of the red LED
indicate problem with the supply, or gas valve, or a loose connection. Contact your
Condair representative if further assistance is required.
Faulty ignition control module.
– Check the status LED on the ignition control module – a solid red LED indicates an
ignition control module failure. Replace the ignition control module, if necessary.
Incorrect gas valve adjustments.
– Check if the throttle adjustment on the gas valve has been tampered.