| | Results of the tests |
| 0 | PRELIMINARY CHECK | All OK | Problems met | Operation |
|---|
| Check
that the evaporator air filter is not clogged | End of diagnosis | Evaporator air filter
blocked | Replace
evaporator filter |
| 1 | CHECKING SYSTEM PRESSURE | All OK | Problems met | Operation |
|---|
| Connect
the climate control system to the repressurizing equipment and check
the system pressure See Test 5040A CHECK ON OPERATION OF AIR CONDITIONING SYSTEM (TEMPERATURE) | Continue to Step 2 | System pressure incorrect. | Restore correct system pressure. |
| Coolant pressure too low or too high | Restore the correct coolant level |
| 2 | CHECK WITH DIAGNOSTIC EQUIPMENT | All OK | Problems met | Operation |
|---|
| Connect
the examiner and check for errors at the air mixing motors | Continue to Step 4 | Air mixing motor error | Continue to Step 3 |
| 3 | ELECTRICAL CIRCUIT CHECK | All OK | Problems met | Operation |
|---|
| Check
the continuity/insulation of the electrical connection for the air
mixing motors | Continue to Step 7 | Electrical conection broken
or not insulated. | Restore electrical connection continuity/insulation. |
| 4 | CHECKING PIPES AND FILTER | All OK | Problems met | Operation |
|---|
| Check
high and low pressure pipes and air conditioning system filter are
not blocked. | Continue to Step 5 | Pipes from compressor
to condenser blocked. | Change the pipe from compressor to condenser |
| Pipe from filter to expansion valve blocked. | Change the pipe from filter to expansion valve |
| Drier filter blocked and/or damaged. | Replace the filter Op. 5040A48 |
| 5 | CONDENSER CHECK | All OK | Problems met | Operation |
|---|
| Check
that the condenser is not blocked. | Continue to Step 6 | Condenser blocked | Replace the condenser Op. 5040A40 |
| 6 | EXPANSION VALVE CHECK | All OK | Problems met | Operation |
|---|
| Check
that the expansion valve is working properly | Continue to Step 8 | Expansion valve blocked
shut. | Replace
the expansion valve Op. 5040B30 |
| 7 | CHECKING CORRECT OPERATION USING
TESTER | All
OK | Problems
met | Operation |
|---|
| Check
that the errors at the air mixing motors do not persist (after the
self-learning procedure) | End of diagnosis | Air mixing motor error | Replace the mixed air motor |
| 8 | CHECK ON CORRECT OPERATION | All OK | Problems met | Operation |
|---|
| Check
that the fault is no longer present | End of diagnosis | Fault persists | Change the climate control
system node |