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15
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Troubleshooting
15 Troubleshooting
In this chapter
15.1 Overview: Troubleshooting
15.2 Precautions when troubleshooting
Installer reference guide
232
15.1
Overview: Troubleshooting .................................................................................................................................................... 232
15.2
Precautions when troubleshooting........................................................................................................................................ 232
15.3
Solving problems based on symptoms................................................................................................................................... 233
15.3.1
Symptom: The unit is NOT heating as expected ................................................................................................... 233
15.3.2
Symptom: The compressor does NOT start (space heating or domestic water heating) .................................... 234
15.3.3
Symptom: The pump is making noise (cavitation) ................................................................................................ 234
15.3.4
Symptom: The pressure relief valve opens ........................................................................................................... 234
15.3.5
Symptom: The pressure relief valve leaks ............................................................................................................. 235
15.3.6
Symptom: The space is NOT sufficiently heated at low outdoor temperatures .................................................. 236
15.3.7
Symptom: The pressure at the tapping point is temporarily unusually high ....................................................... 237
15.3.8
Symptom: Tank disinfection function is NOT completed correctly (AH-error) .................................................... 237
15.4
Solving problems based on error codes................................................................................................................................. 237
15.4.1
To display the help text in case of a malfunction.................................................................................................. 237
15.4.2
Error codes: Overview............................................................................................................................................ 238
Before troubleshooting
Carry out a thorough visual inspection of the unit and look for obvious defects such
as loose connections or defective wiring.
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.
DANGER: RISK OF BURNING/SCALDING
EWSAH/X06UD
Daikin Altherma 3 WS
4P675765-1 - 2022.04
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Table of Contents
Troubleshooting
