Table 2-2. Unit Troubleshooting (Continued)
TEST OR INSPECTION
DRYER BURNER FLAME FAILS. (Cont)
Check for loose fuel pump coupling.
Tighten fuel pump coupling. Refer to paragraph 2-45.
If fuel pump coupling is serviceable, proceed to next step.
Check for defective fuel solenoid. Replace suspect solenoid
temporarily with a known good one.
If fuel solenoid is defective, replace fuel solenoid. Refer
to paragraph 2-41.
If solenoid is serviceable, proceed to next step.
Check for clogged or damaged burner nozzle.
Clean clogged burner nozzle or replace damaged nozzle. Refer
to paragraph 2-42.
If burner nozzle is serviceable, proceed to next step.
Check for defective combustion blower impeller. Check for loose
coupling and for damaged or missing parts.
If combustion blower impeller is defective and/or parts are
damaged or missing, replace combustion blower impeller.
Tighten loose couplings. Refer to paragraph 2-44.
If combustion blower impeller is serviceable, proceed to next
Check for defective combustion blower motor. Check for noisy or hot
operation of motor.
If combustion blower motor is defective or if operation is
noisy or hot, replace combustion blower motor. Refer to
If combustion-blower motor is serviceable and problem
persists, notify your supervisor.