Malfunctions And Fault Codes; Failures - Daikin EKHHP300AA2V3 Installation And Operating Instructions Manual

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Malfunctions and fault codes

8 Malfunctions and fault codes
WARNING!
Touching live parts can result in an electric shock and lead to potentially fatal injuries and burns.
● Before beginning work on live parts, disconnect all of the systems circuits from the power
supply (switch off main switch, disconnect fuse) and secure against unintentional restart.
● The electrical connection and working on the electrical components should only be performed by
electrical engineers in compliance with valid standards and guidelines as well as the specifica-
tions of the energy supply company.
● The equipment covers and maintenance opening covers must be re-fitted immediately after
completion of the work.

8.1 Failures

Malfunction
System not working
(nothing on display, oper- No mains voltage
ation LED off)
Day of the week and time are not correctly set.
Switching time program
is not working or pro-
grammed switching times
Switching time function deactivated
are being carried out at
During a switching time the user made a man-
the wrong time.
ual setting (e.g. changed the target tempera-
ture, changed the operating mode)
Control unit does not
Operating system of control unit crashed.
respond to entries
Displayed values are not
Operating system of control unit crashed.
updated
Water flow too low.
Hot water does not heat
Target value range is too low.
up enough.
Draw-off rate too high.
Installation and operating instructions
32
Possible cause Possible solution
● Switch on the external main switch of the machine.
● Switch on system fuse(s).
● Replace system fuse(s).
● Set the weekday
● Set time.
● Check week day-switching time allocation.
● Activate switching time function (Key
● Activate switching time function again (Key
● Carry out RESET of control unit. Disconnect the
system from the power supply for at least 10 s and
then switch on again.
● Carry out RESET of control unit. Disconnect the
system from the power supply for at least 10 s and
then switch on again.
● Check that all stop valves of the water circuit are
completely open.
● Air in hot water delivery circuit, bleed.
● Check parameter [0-00], increase if necessary.
● Set hot water temperature too low, increase manually.
● Check parameter [6-00], reduce if necessary.
● Reduce the draw-off rate, limit throughput.
● Check operating mode, select a different operating
mode, if necessary (e.g. "High Output").
).
).
DAIKIN EKHHP(3/5)00AA2V3
DAIKIN Hot water heat pump
008.1423444_05 – 08/2016