Service manual

TROUBLE SHOOTING GUIDE
NOISE
Problem Excessive noise with the heater on.
Probable Cause Excessively dirty blower or defective heater assembly.
Solution Remove the heater assembly cover and clean the
dust out of the blower, if noise persists replace heater
assembly or see below.
Service Manual Reference Page 11
Problem Grinding or excessive noise with the heater off.
Probable Cause Defective flame motor.
Solution Replace flame motor with a new one.
Service Manual Reference Page 9
20