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Heating  Heating

Brand

Wiliamson Wiliamson List all brands

Type:

FS-120NGFS-120NG
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Error code:

FAULT 39 =
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Error code: FAULT 39 =

Cause of error code FAULT 39 =

Outside sensor error

Solution for error code FAULT 39 =

Outside sensor out of normal operating range (short circuit or open circuit). If sensor goes in short circuit and this condition lasts for more than 10 seconds, error is generated. In case sensor is back to the normal operating range, error is gone. Normal operating range for the outside sensor is from -22°F till +158°F. With sensor broken in a way that he makes an open circuit, error will be generated only if a curve is selected: OTC will be disabled but heating mode will be possible. In case 2 or more sensors are broken, controller will pick up the first that was outside the operating range. Resolving error situation can be achieved only if the sensors is within operating range again.


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