tekmar 518 Thermostat Installation - Manual (Page 10)

© 2013 518_D - 03/13
10 of 12 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 all Programmable Settings are checked except
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 OPEN CIRCUIT ERROR
The auxiliary sensor 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 fault is corrected. If the auxiliary sensor
was intentionally removed, power the thermostat down and up to
clear the error.
AUXILIARY SENSOR SHORT CIRCUIT ERROR
The auxiliary sensor 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 fault is corrected.
Troubleshooting
Error Messages