JOHNSON CONTROLS
12
FORM 130.13-NOM1 (114)
8. If the heater always remains energized when power
is applied, remove the wire from P4 of the interface
circuit board. If the heat remains on, there is a
wiring error or the SSR is defective.
Remove Power From the Unit Before
Proceeding With the Next Step.
9. If the heater is always de-energized when power
is applied, remove the line and load connections
to the proportional heat control and temporarily
tie them together. If the system is a three phase
arrangement, do the phases one at a time.
Always remove power from the unit
before moving to the next phase).
Make sure there is no danger of the temporary
connection shorting to another component or the
chassis. Briey reapply power. If the section of
heat under test now energizes, the SSR is defective.
If heater still will not energize, one of the heater
safety devices (limits, safety contactor or airow
switch) or elements is defective.
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