Daikin EKHWET-BV3, Installer'S Reference Manual, Page: 101 / 120

14 | Troubleshooting
Installer reference guide
101
E120B
R32 Split series – Domestic hot water tank
4P680077-1A – 2022.11
14 Troubleshooting
In this chapter
14.1 Overview: Troubleshooting .................................................................................................................................................... 101
14.2 Precautions when troubleshooting........................................................................................................................................ 101
14.3 Solving problems based on symptoms................................................................................................................................... 102
14.3.1
Symptom: Hot water does NOT reach the desired temperature ......................................................................... 102
14.3.2 Symptom: The pressure at the tapping point is temporarily unusually high ....................................................... 102
14.3.3 Symptom: Tank disinfection function is NOT completed correctly (AH-error) .................................................... 102
14.4 Solving problems based on error codes................................................................................................................................. 102
14.4.1
To display the help text in case of a malfunction.................................................................................................. 103
14.4.2 Error codes: Overview............................................................................................................................................ 103
14.1 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.
14.2 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.