Daikin EBLA04E2V3, Installer'S Reference Manual

Page: 238 / 284

15 | Troubleshooting
Installer reference guide
238
EBLA04~E23V3 + EDLA04~E23V3
Daikin Altherma 3 M
4P685228-1A – 2022.05
15 Troubleshooting
In this chapter
15.1 Overview: Troubleshooting .................................................................................................................................................... 238
15.2 Precautions when troubleshooting........................................................................................................................................ 238
15.3 Solving problems based on symptoms................................................................................................................................... 239
15.3.1
Symptom: The unit is NOT heating or cooling as expected .................................................................................. 239
15.3.2 Symptom: Hot water does NOT reach the desired temperature ......................................................................... 239
15.3.3 Symptom: The compressor does NOT start (space heating or domestic water heating) .................................... 240
15.3.4 Symptom: The system is making gurgling noises after commissioning................................................................ 241
15.3.5 Symptom: The pump is blocked............................................................................................................................. 241
15.3.6 Symptom: The pump is making noise (cavitation) ................................................................................................ 242
15.3.7 Symptom: The pressure relief valve opens ........................................................................................................... 242
15.3.8 Symptom: The water pressure relief valve leaks................................................................................................... 243
15.3.9 Symptom: The space is NOT sufficiently heated at low outdoor temperatures .................................................. 243
15.3.10 Symptom: The pressure at the tapping point is temporarily unusually high ....................................................... 244
15.3.11 Symptom: Tank disinfection function is NOT completed correctly (AH-error) .................................................... 244
15.4 Solving problems based on error codes................................................................................................................................. 245
15.4.1
To display the help text in case of a malfunction.................................................................................................. 245
15.4.2 Error codes of the unit ........................................................................................................................................... 245
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
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.
DANGER: RISK OF ELECTROCUTION
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.