25 of 28 © 2009 D 527 - 06/09
Testing the Wiring
The following tests are to be performed using standard
testing practices and procedures and should only be carried
out by properly trained and experienced persons.
A good quality electrical test meter, capable of reading
from at least 0-300 V (ac), 0-2,000,000 Ohms, and testing
for continuity is essential to properly test the wiring and
sensors.
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Error Message Description
COOL MASTER ERROR
Switch setting number 3 (Cool Group 1 Master) has been selected and another cool group
master has been detected with the same group number. To have a second cool group, a
tekmarNet cooling thermostat other than a 530 is required so the Cool Group Master number
can be set above number 1.
The cooling system will not operate while this error message is present.
Error clears once either the other cool group master changes its group number or switch
setting number 3 is set to none (On position).
COOL MEMBER ERROR
Switch setting number 3 has been selected to join a cooling group as a member, yet there
is no cooling group master thermostat.
Error clears once the thermostat detects a cool group master or switch setting number 3 is
set to none (On position).
FLOOR SENSOR SHORT CIRCUIT
The floor sensor has a short circuit. Check for damaged wires. Locate and repair the problem
as described in the Data Brochure D 079.
Error clears once the floor sensor fault is corrected.
FLOOR SENSOR OPEN CIRCUIT
The floor sensor has an open circuit. Check for loose or damaged wires. Locate and repair
the problem as described in the Data Brochure D 079.
Error clears once the floor sensor fault is corrected.
If the floor sensor is intentionally removed, locate the Room Sensor setting in the Adjust
menu and set to On. Power the thermostat down and up to clear the error.
OUTDOOR SENSOR SHORT CIRCUIT
The outdoor sensor has a short circuit. Check for damaged wires. Locate and repair the
problem as described in the Data Brochure D 070.
Error clears after the outdoor sensor fault is corrected.
OUTDOOR SENSOR OPEN CIRCUIT
The outdoor sensor has an open circuit. Check for loose or damaged wires. Locate and
repair the problem as described in the Data Brochure D 070.
Error clears once the outdoor sensor fault is corrected.
If the outdoor sensor is intentionally removed, power the thermostat down and up to clear
the error.
Error Messages (continued)
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