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Description
MIX SUPPLY SENSOR OPEN CIRCUIT ERROR
Due to an open circuit, the control is unable to read the Mix Supply Sensor 082 on terminals 15 and 16. The control stops
operation and does not provide any heat.
Check the system supply sensor wire for open circuits according to the sensor installation manual. It may be necessary to replace
the mix supply sensor. Once the error has been corrected, the error message automatically clears.
MIX SUPPLY SENSOR SHORT CIRCUIT ERROR
Due to a short circuit, the control is unable to read the Mix Supply Sensor 082 on terminals 15 and 16. The control stops operation
and does not provide any heat.
Check the system supply sensor wire for short circuits according to the sensor installation manual. It may be necessary to replace
the mix supply sensor. Once the error has been corrected, the error message automatically clears.
BOILER SENSOR OPEN CIRCUIT ERROR
Due to an open circuit, the control is unable to read the Boiler Sensor 082 on terminals 16 and 17. When application mode is set
to boiler or mix the control stops operation. In all other application modes, the control continues to heat the snow melting
system but does not control the boiler operating temperature.
Check the boiler sensor wire for open circuits according to the sensor installation manual. It may be necessary to replace the
boiler sensor. Once the error has been corrected, the error message automatically clears.
BOILER SENSOR SHORT CIRCUIT ERROR
Due to a short circuit, the control is unable to read the Boiler Sensor 082 on terminals 16 and 17. When application mode is set
to boiler or mix the control stops operation. In all other application modes, the control continues to heat the snow melting
system but does not control the boiler operating temperature.
Check the boiler sensor wire for short circuits according to the sensor installation manual. It may be necessary to replace the
boiler supply sensor. Once the error has been corrected, the error message automatically clears.
SLAB SENSOR OPEN CIRCUIT ERROR
Due to an open circuit, the control is unable to read the Slab Sensor 072 or 073 on terminals 7 and 10. Idling and storm are
disabled and energy saving features such as Warm Weather Shut Down (WWSD) and Cold Weather Cut Off (CWCO) are
operated using the outdoor temperature only.
Check the slab sensor wire for open circuits according to the sensor installation manual. It may be necessary to replace the slab
sensor. Once the error has been corrected, the error message automatically clears.
If the slab sensor has been intentionally removed, set the slab sensor setting in the system setup menu to off.
SLAB SENSOR SHORT CIRCUIT ERROR
Due to a short circuit, the control is unable to read the Slab Sensor 072 or 073 on terminals 7 and 10. Idling and Storm are disabled
and energy saving features such as Warm Weather Shut Down (WWSD) and Cold Weather Cut Off (CWCO) are operated using
the outdoor temperature only.
Check the slab sensor wire for short circuits according to the sensor installation manual. It may be necessary to replace the slab
sensor. Once the error has been corrected, the error message automatically clears.
SNOW SENSOR YELLOW WIRE OPEN CIRCUIT ERROR
Due to an open circuit, the control is unable to read the yellow wire connected to the Snow/Ice Sensor 090 or 094, or the Snow
Sensor 095 on terminals 7 and 9. The control can no longer automatically detect snow or ice, but manual start of the snow
melting system is still available.
Check the snow/ice sensor or snow sensor yellow and black wires and any wire splices for open circuits according to the
sensor installation manual. It may be necessary to replace the sensor. Once the error has been corrected, the error message
automatically clears.
SNOW SENSOR BLUE WIRE OPEN CIRCUIT ERROR
Due to an open circuit, the control is unable to read the blue wire connected to the Snow/Ice Sensor 090 or 094, or the Snow
Sensor 095 on terminals 7 and 8. The control can no longer automatically detect snow or ice, but manual start of the snow
melting system is still available.
Check the snow/ice sensor or snow sensor blue and black wires and any wire splices for open circuits according to the sensor
installation manual. It may be necessary to replace the sensor. Once the error has been corrected, the error message automatically
clears.
SNOW SENSOR BLUE WIRE SHORT CIRCUIT ERROR
Due to a short circuit, the control is unable to read the blue wire connected to the Snow/Ice Sensor 090 or 094, or the Snow
Sensor 095 on terminals 7 and 8. The control can no longer automatically detect snow or ice, but manual start of the snow
melting system is still available.
First check the snow/ice sensor or snow sensor for dirt or debris. The ring structure of the sensor may need cleaning with hot
soapy water and a nylon brush. Rinse with water. Second, check the snow/ice sensor or snow sensor blue and black wires and
any wire splices for short circuits according to the sensor installation manual. It may be necessary to replace the sensor. Once
the error has been corrected, the error message automatically clears.
Error Messages (2 of 4)