88
2. Disconnect the thermocouple for the suspect zone (Note: For
thermocouple numbers refer to the main schematic or check
zone thermocouple block itself). Install a short length of wire
between the terminals where the thermocouple was
connected.
View the zone on the overview screen. It should read about 25
degrees C. If the zone reads 3277, the controller is faulty and
should be replaced.
C. Thermocouple
Verify that the thermocouple for the zone in question is not open by
performing the following steps. (Note: If the controller checked out in
step B, the computer will read 3277 if the thermocouple is open)
Visually check for proper connections at the thermocouple blocks and
controller. If all connections are visually OK, disconnect the
thermocouple from the HC1-X or HC2 controller and test with an
ohmmeter. You must perform this test with the thermocouple both hot
and cold. If either test indicated an open condition, the thermocouple is
faulty and should be replaced.
See also Troubleshooting Guide, section VI, below.
Содержание TCM-2200
Страница 5: ...1 Introduction ...
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Страница 27: ...23 Operating System Software Guide ...
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Страница 65: ...61 Standard and Optional Equipment Operating Guide ...
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Страница 71: ...67 Troubleshooting Guide HC1 X or HC2 controller ...
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