Bosch ACS 653-P - Page 64

ACS 653, ACS 663 Service Manual
SP00D00624 2021-04-08 Robert Bosch GmbH
64
Diagnostics and Testing
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Refrigerant Identication Identier Unstable Reading
Error 3
Possible reason:
1. Radio transmitters and arc welders.
Refrigerant Identication Identier Air Calibration Error Possible reasons:
1. Sampling path problem:
• Brass lter clogged and/or sample
hose clogged.
• Sample hose is broken, cracked
or punctured.
• Sample hose is disconnected.
2. Identier internal piping problem:
• One or more tubes are discon-
nected.
• One or more tubes are broken,
cracked or punctured.
• One or more tubes are clogged.
3. Identier white paper lter defective:
• White paper lter is broken.
• White paper lter is clogged.
• White paper lter is disconnected.
4. Identier air intake or air exhaust
clogged.
5. Identier solenoid leaking during
calibration.
Refrigerant Identication Identier Refrigerant Flow
Error
Possible reasons:
1. Sampling path problem:
• Brass lter clogged and/or sample
hose clogged.
• Sample hose is broken, cracked
or punctured.
• Sample hose is disconnected.
2. Identier internal piping problem:
• One or more tubes are discon-
nected.
• One or more tubes are broken,
cracked or punctured.
• One or more tubes are clogged.
3. Identier white paper lter defective:
• White paper lter is broken.
• White paper lter is clogged.
• White paper lter is disconnected.
4. Identifier solenoid issue during
analysis:
• Identier solenoid is clogged.
• Identier solenoid cable is defective.
• Identier solenoid power board
issue.