Troubleshooting Comet Executive Gas
6-16
WARNING
Only trained personnel with experience
in gas, electrical or mechanical repair
should troubleshoot and repair the unit.
Troubleshooting
WARNING
Read the REPAIR chapter and make
sure that the power is disconnected
before doing any repairs.
ISSUE POSSIBLE CAUSE SOLUTION
Exhaust Poor or None
1. Exhaust blower motor pro-
tector is tripped.
• Reset the motor protector.
2. Exhaust blower motor is
binding.
• Inspect the exhaust blower motor. Refer
to Check and Clean Motors on page
4-11.
3. Exhaust blower sail switch
and/or wheel is dirty.
• Check for lint build up on the sail switch
and exhaust blower wheel. Refer to
Check and Clean Sail Switch and Ex-
haust Blower Wheel on page 4-11.
4. Sail switch is operating
incorrectly.
• With the unit running, check the circuit
for the sail switch by testing for 24 V
between terminal 11 and GND in the
main electrical panel. If 24 V is not pres-
ent, the sail switch is bad and must be
replaced.
5. Wire connections for the
exhaust blower motor are
loose or disconnected.
• Check the wire connections from the
exhaust blower to the main electri-
cal panel. Refer to Sail Switch and
Exhaust Blower Motor Connection on
page 2-8.
6. Screens are blocking the
end of the exhaust duct
work.
• Remove any screens from the end of
the ductwork. Refer to Exhaust Blower
Installation on page 2-5.
7. Exhaust duct work in the
canopy is dirty or blocked.
• Clean out the exhaust duct work.
6.5 Exhaust System
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