tekmar 557 Thermostat Installation - Manual (Page 50)

© 2014 557_D - 09/14
50 of 52 A Watts Water Technologies Company
Error Message Description
SYSTEM CONTROL LOST ERROR
The thermostat can no longer communicate to the tekmarNet
® system
control. Check for open or short circuits in the tekmarNet ® communication
wiring. The error automatically clears once the tekmarNet ® system
control has been detected.
If the tekmarNet
® system control was intentionally removed from the
system, remove and then re-apply power to the thermostat to clear
the error.
NEED DUCT SENSOR ERROR
The dehumidifier mode has be configured to be DHUM2 or DHUM3.
These modes require a duct sensor in order to function and no duct
sensor has been detected. To clear the error message, either change
the dehumidification mode or install a duct sensor to Sensor 1.
AIR GROUP MASTER ERROR
Two thermostats have been assigned to be the master of the same
air group (cool group) number.
To clear the error, go to the Setup menu and either select a different
air group master number or set the air group master to None.
SCHEDULE MASTER ERROR
Two thermostats on the tekmarNet
® system have been set to the
same Schedule Master number. The thermostat operates at the
temperature settings while this error is present.
To clear the error, select a different Schedule Master number, set
a different Schedule Member number, set the Schedule to Zone,
or set the Schedule to None.
SCHEDULE MEMBER ERROR
The thermostat can not longer detect its schedule master. The
thermostat operates at the
temperature settings while this
error is present.
To clear the error,
select a different Schedule Member number, set
the Schedule to Zone, or set the Schedule to None.
CHANGE FILTER
The air filter requires cleaning or replacement. Once this has been
completed touch the Cancel key in the Toolbox menu. Alternatively, go
to the Monitor menu and clear the Filter Hours by touching the number
and then touch the ENTER key.
FREEZE PROTECTION WARNING
The duct temperature has dropped below 45°F (7.0°C). The second
stage cooling will be forced off at 40°F (4.5°C) and the first stage
cooling will be forced off at 35°F (1.5°C). The warning message self
clears once the duct temperature exceeds 45°F (7.0°C).
Error Messages (4 of 5)