Benchmark ZWB 7-29 CC1 Installation And Servicing page 99

Temperature rises instead of falling
Check
Timer clock (DT 2) incorrectly set
Incorrect or no modulation
Check
Programmer incorrectly wired
7 181 465 346 GB (03.02)
Failure identification procedure
Action
B Check setting and correct as necessary.
Action
B Check wiring against wiring diagram and correct
as necessary.
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