tekmar 521 Programmable Thermostat Installation - Manual (Page 26)

© 2014 521_D - 01/14
26 of 28 A Watts Water Technologies Company
Error Message Description
SETUP MENU SAVE ERROR
The thermostat failed to read the Programmable Settings from memory
and has reloaded the factory default settings. The thermostat stops
normal operation until the access level is changed to Installer and all
Programmable Settings are checked. The thermostat continues to
provide freeze protection.
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.
AUXILIARY SENSOR 1 OPEN CIRCUIT ERROR
The auxiliary sensor 1 has an open circuit. Check for loose or damaged
wires. Locate and repair the problem as described in the Sensor
Testing section of this brochure. The error clears after the auxiliary
sensor fault is corrected. If the auxiliary sensor was intentionally
removed, set access level to Installer and set Sensor 1 to None.
AUXILIARY SENSOR 1 SHORT CIRCUIT ERROR
The auxiliary sensor 1 has a short circuit. Check for damaged wires.
Locate and repair the problem as described in the Sensor Testing
section of this brochure. The error clears after the auxiliary sensor
fault is corrected.
AUXILIARY SENSOR 2 OPEN CIRCUIT ERROR
The auxiliary sensor 2 has an open circuit. Check for loose or damaged
wires. Locate and repair the problem as described in the Sensor
Testing section of this brochure. The error clears after the auxiliary
sensor fault is corrected. If the auxiliary sensor was intentionally
removed, set access level to Installer and set Sensor 1 to None.
AUXILIARY SENSOR 2 SHORT CIRCUIT ERROR
The auxiliary sensor 2 has a short circuit. Check for damaged wires.
Locate and repair the problem as described in the Sensor Testing
section of this brochure. The error clears after the auxiliary sensor
fault is corrected.
Troubleshooting
Error Messages