© 2015
532_D - 02/15
18 of 20
A Watts Water Technologies Company
Error Message
Description
Room
ROOM SENSOR OPEN CIRCUIT ERROR
The built-in air temperature sensor has an open circuit fault. Do not
confuse this error with the auxiliary room sensor short circuit error.
This error cannot be field repaired. Contact your wholesaler or tekmar
sales representative for details on repair procedures.
Room
ROOM SENSOR SHORT CIRCUIT ERROR
The built-in air temperature sensor has a short circuit fault. Do not
confuse this error with the auxiliary room sensor short circuit error.
This error cannot be field repaired. Contact your wholesaler or tekmar
sales representative for details on repair procedures.
SENSOR 1 OPEN CIRCUIT ERROR
Auxiliary sensor 1 has an open circuit. Check for loose or damaged
wires. Locate and repair the problem as described in the sensor
Installation & Operation Manual (070_D, 079_D). The error clears
once the auxiliary sensor 1 fault is corrected. If the sensor was
intentionally removed, power the thermostat down and up to clear
the error.
SENSOR 1 SHORT CIRCUIT ERROR
Auxiliary sensor 1 has a short circuit. Check for damaged wires.
Locate and repair the problem as described in the sensor Installation
& Operation Manual (070_D, 079_D). The error clears after the
auxiliary sensor 1 fault is corrected.
SENSOR 2 OPEN CIRCUIT ERROR
Auxiliary sensor 2 has an open circuit. Check for loose or damaged
wires. Locate and repair the problem as described in the sensor
Installation & Operation Manual (070_D, 079_D). The error clears
once the auxiliary sensor 2 fault is corrected. If the sensor was
intentionally removed, power the thermostat down and up to clear
the error.
SENSOR 1 SHORT CIRCUIT ERROR
Auxiliary sensor 2 has a short circuit. Check for damaged wires.
Locate and repair the problem as described in the sensor Installation
& Operation Manual (070_D, 079_D). The error clears after the
auxiliary sensor 2 fault is corrected.
AIR GROUP MEMBER ERROR
The thermostat can no longer detect its air group or cooling
group master thermostat through the tekmarNet system.
To clear the error, either select a heat-cool thermostat to be
the air group master or set this thermostat’s air group member
setting in the programmable settings to None.
