tekmar 557 Thermostat Installation - Manual (Page 49)

© 2014 557_D - 09/14
49 of 52 A Watts Water Technologies Company
Error Message Description
ROOM SENSOR SHORT CIRCUIT ERROR
Due to a short circuit, the thermostat is unable to read the built-in room
temperature sensor. If Sensor 1, 2 or 3 is set to Room, or the thermostat
is connected to a tekmarNet
® system control, the thermostat continues
to operate, otherwise operation stops.
The error cannot be field repaired. Contact your tekmar
® sales
representative for repair procedures.
ROOM SENSOR OPEN CIRCUIT ERROR
Due to an open circuit, the thermostat is unable to read the built-in
room temperature sensor. If Sensor 1, 2 or 3 is set to Room, or the
thermostat is connected to a tekmarNet
® system control, the thermostat
continues to operate, otherwise operation stops.
The error cannot be field repaired. Contact your tekmar
® sales
representative for repair procedures.
LOCAL HUMIDITY SENSOR ERROR
The built-in humidity sensor is faulty. The error cannot be field repaired.
Contact your tekmar
® sales representative for repair procedures.
EXTERNAL HUMIDITY SENSOR ERROR
The external humidity sensor is faulty. Check the external sensor wiring
terminations and troubleshoot using the data brochure 086_D. The
error will self clear when the humidity sensor is reading correctly. If
the external humidity sensor has been intentionally removed, set the
Sensor 3 setting in the Setup menu to Off.
SENSOR 1, 2 OR 3 SHORT CIRCUIT ERROR
Due to a short circuit, the thermostat is unable to read auxiliary Sensor
1, 2 or 3. The thermostat stops normal operation if the Sensor is the
only active Room or Floor sensor or if a Floor Maximum temperature
has been set.
Check the auxiliary sensor wire for short circuits according to the sensor
installation manual. It may be necessary to replace the auxiliary sensor.
Once the error has been corrected, the error message automatically
clears.
SENSOR 1, 2 OR 3 OPEN CIRCUIT ERROR
Due to an open circuit, the thermostat is unable to read auxiliary Sensor
1, 2 or 3. The thermostat stops normal operation if the Sensor is the
only active Room or Floor sensor or if a Floor Maximum temperature
has been set.
Check the auxiliary sensor wire for short circuits according to the sensor
installation manual. It may be necessary to replace the auxiliary sensor.
Once the error has been corrected, the error message automatically
clears.
If the auxiliary sensor has been intentionally removed, set the applicable
Sensor 1, 2 or 3 setting in the Setup menu to Off.
Error Messages (3 of 5)