Step | Action | Yes | No | ||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
1 | Were you sent here from the A/C System Performance Test? | Go to Step 2 | |||||||||
2 | After continued operation of the A/C system, do the low and high side pressures equalize or become static ? | Go to Step 5 | Go to Step 3 | ||||||||
3 | Refer to the pressures recorded during the A/C System Performance Test. Inspect for the following conditions: Caution: Refer to Moving Parts and Hot Surfaces Caution in the Preface section.
Do the listed conditions exist? | Go to Step 5 | Go to Step 4 | ||||||||
4 | Refer to the pressures recorded during the A/C System Performance Test. Inspect for the following conditions: Caution: Refer to Moving Parts and Hot Surfaces Caution in the Preface section.
Do the listed conditions exist ? | Go to Step 5 | |||||||||
5 | The A/C system has a low refrigerant charge. Evacuate and recharge the A/C system. Refer to Refrigerant Recovery and Recharging . Is the procedure complete? | Go to Step 6 | -- | ||||||||
6 |
Are the readings within the specified ranges found on the A/C Performance Chart? | Go to Step 13 | Go to Step 7 | ||||||||
7 | The A/C compressor is malfunctioning. Remove the expansion device and inspect for contamination. Refer to Expansion (Orifice) Tube Replacement . Did you find metal flakes on the expansion device? | Go to Step 9 | Go to Step 8 | ||||||||
8 | Inspect the expansion device for a brown, powdery residue indicating desiccant in the A/C system. Is there a brown, powdery residue present? | Go to Step 11 | Go to Step 12 | ||||||||
9 |
Is there metal flake contamination present? | Go to Step 10 | Go to Step 12 | ||||||||
10 |
Is the repair complete? | Go to Step 13 | -- | ||||||||
11 |
Is the repair complete? | Go to Step 13 | -- | ||||||||
12 |
Is the repair complete? | Go to Step 13 | -- | ||||||||
13 | Operate the system in order to verify the repair Did you correct the condition ? | System OK | Go to Symptoms - HVAC Systems - Manual , or to Symptoms - HVAC Systems - Automatic |