Daikin Altherma 3 R W - Troubleshooting; Overview: Troubleshooting; Precautions When Troubleshooting

15 | Troubleshooting
Installer reference guide
269
ERLA11~16D + EBBH/X11+16D
Daikin Altherma 3 R W
4P643603-1B – 2022.05
15 Troubleshooting
In this chapter
15.1 Overview: Troubleshooting .................................................................................................................................................... 269
15.2 Precautions when troubleshooting ........................................................................................................................................ 269
15.3 Solving problems based on symptoms................................................................................................................................... 270
15.3.1 Symptom: The unit is NOT heating or cooling as expected .................................................................................. 270
15.3.2 Symptom: Hot water does NOT reach the desired temperature ......................................................................... 270
15.3.3 Symptom: The compressor does NOT start (space heating or domestic water heating) .................................... 271
15.3.4 Symptom: The system is making gurgling noises after commissioning................................................................ 271
15.3.5 Symptom: The pump is blocked............................................................................................................................. 273
15.3.6 Symptom: The pump is making noise (cavitation) ................................................................................................ 273
15.3.7 Symptom: The pressure relief valve opens ........................................................................................................... 274
15.3.8 Symptom: The water pressure relief valve leaks................................................................................................... 274
15.3.9 Symptom: The space is NOT sufficiently heated at low outdoor temperatures .................................................. 275
15.3.10 Symptom: The pressure at the tapping point is temporarily unusually high ....................................................... 276
15.3.11 Symptom: Tank disinfection function is NOT completed correctly (AH-error) .................................................... 276
15.4 Solving problems based on error codes................................................................................................................................. 276
15.4.1 To display the help text in case of a malfunction .................................................................................................. 277
15.4.2 Error codes: Overview............................................................................................................................................ 277
15.1 Overview: Troubleshooting
This chapter describes what you have to do in case of problems.
It contains information about:
▪ Solving problems based on symptoms
▪ Solving problems based on error codes
Before troubleshooting
Carry out a thorough visual inspection of the unit and look for obvious defects such
as loose connections or defective wiring.
15.2 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.