Step | Action | Yes | No | ||||||
---|---|---|---|---|---|---|---|---|---|
DEFINITION: Noise originating from the auxiliary blower motor. | |||||||||
1 | Were you sent here from the HVAC Symptoms? | Go to Step 2 | Go to Symptoms - HVAC Systems - Manual or Diagnostic System Check - HVAC Systems - Automatic | ||||||
2 |
Is a noise evident during auxiliary blower operation? | Go to Step 3 | Go to Step 10 | ||||||
3 | Inspect for excessive vibration at each auxiliary blower motor speed by feeling the auxiliary blower case. Is excess vibration present? | Go to Step 5 | Go to Step 4 | ||||||
4 | Listen to the auxiliary blower motor at each blower speed. Is the auxiliary blower motor making a squeaking or chirping noise? | Go to Step 8 | Go to Step 10 | ||||||
5 |
Did you find foreign material on the auxiliary blower motor? | Go to Step 7 | Go to Step 6 | ||||||
6 | Inspect the auxiliary blower motor for the following conditions:
Did you find any of these conditions? | Go to Step 8 | Go to Step 9 | ||||||
7 | Remove the foreign material. Is the action complete? | Go to Step 9 | -- | ||||||
8 | Replace the auxiliary blower motor. Refer to Auxiliary Blower Motor Replacement . Is the action complete? | Go to Step 10 | -- | ||||||
9 | Install the auxiliary blower motor. Refer to Auxiliary Blower Motor Replacement . Is the action complete? | Go to Step 10 | -- | ||||||
10 | Operate the system in order to verify the repair. Does the system operate correctly? | System OK | Go to Step 2 |