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Troubleshooting
Installer reference guide
57
RXF20~ARXF20~42E5V1B
R32 split series
4P519439-21V – 2022.10
13 Troubleshooting
13.1 Overview: Troubleshooting
This chapter describes what you have to do in case of problems.
It contains information about solving problems based on symptoms.
Before troubleshooting
Carry out a thorough visual inspection of the unit and look for obvious defects such
as loose connections or defective wiring.
13.2 Precautions when troubleshooting
DANGER: RISK OF ELECTROCUTION
DANGER: RISK OF BURNING/SCALDING
WARNING
▪
When carrying out an inspection on the switch box of the unit, ALWAYS make
sure that the unit is disconnected from the mains. Turn off the respective circuit
breaker.
▪
When a safety device was activated, stop the unit and find out why the safety
device was activated before resetting it. NEVER shunt safety devices or change
their values to a value other than the factory default setting. If you are unable to
find the cause of the problem, call your dealer.
WARNING
Prevent hazards due to inadvertent resetting of the thermal cut-out: power to this
appliance MUST NOT be supplied through an external switching device, such as a
timer, or connected to a circuit that is regularly turned ON and OFF by the utility.
13.3 Solving problems based on symptoms
13.3.1 Symptom: Indoor units fall, vibrate or make noise
Possible causes
Corrective action
The indoor units are NOT installed
securely.
Install the indoor units securely.
