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TC4-1CH
In addition to detecting these errors, the controller is programmed to
react to certain situations and avoid making things worse. The following
diagram shows the controller logic in these cases.
Check outdoor probe
ERROR
Check potentiometer
MAXIMUM OPENING
Checks are performed in the order that they appear in the diagram. If two
systems break down at the same time, only one alarm code is displayed,
the one with the smaller number. For example, if both probes are defec-
tive, the controller displays AL 1. In this case, it is impossible to know
that the indoor probe is defective before fixing the outdoor probe.
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TC4-1CH.rev.01
Check indoor probe
ERROR
OK
ERROR
DISABLE SECURITY OVERRIDES
OK
Check outdoor probe
ERROR
OK
TIMER
OK
Check potentiometer
ERROR
NORMAL
OK
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