Daikin EHSXB08P50BA [59/84] X errors malfunctions and messages

Daikin EHSXB08P50BA [59/84] X errors malfunctions and messages
8 x Errors, malfunctions and messages
Daikin Altherma EHS(X/H)
Daikin Altherma integrated solar unit
008.1441399_02 – 01/2021 – EN
Installation and operating instructions
59
Room cooler does
not cool
Water flow too low.
Check that all stop valves of the water circuit are
completely open.
Check that the water filter is dirty.
Check that the expansion tank is defective.
Fully vent the heating system and device-internal
circulation pump.
On the control unit (rotary switch position "Info"
)
check that there is sufficient water pressure (>0.5 bar),
if necessary, refill the heating water.
Check that the resistance in the water circuit is not too
high for the pump (see installation manual for
"Technical Data").
"Cooling" switched off (e.g. room thermostat
requires "Cooling", but switching time pro-
gram is in economy phase, outside tempera-
ture too high).
Check the operating mode setting.
Check the request parameters.
Check setting of the date, time and switching time
program on the control unit.
Refrigerant compressor is not working.
If there is a Backup-Heater installed (EKBUxx):
Check whether the return flow temperature Backup-
Heater heats up to at least 15 °C (if the return flow
temperature is low, the heat pump first uses the
Backup-Heater in order to reach this minimum return
flow temperature).
Check the mains supply to the Backup-Heater
(EKBUxx).
Thermal protection switch (STB) on Backup-Heater
(EKBUxx) has been triggered. Unlock.
System is in the operating mode "Heating". Switch the operating mode to "Cooling".
Outdoor temperature < 4 °C
The heat pump has automatically switched to the "Heating"
operating mode so as to be able to guarantee frost protec-
tion should the external temperature drop further. Room
cooling not possible.
Cooling effect of
room cooling insufficient
Water flow too low.
Check that all stop valves of the water circuit are
completely open.
Check that the water filter is dirty.
Check that the expansion tank is defective.
Fully vent the heating system and device-internal
circulation pump.
On the control unit (rotary switch position "Info"
)
check that there is sufficient water pressure (>0.5 bar),
if necessary, refill the heating water.
Check that the resistance in the water circuit is not too
high for the pump (see installation manual for
"Technical Data").
Water quantity in heating system too low.
Check the primary pressure in the expansion
container and the water pressure, if necessary, refill
the heating water and reset the primary pressure
(see chapter 7.4).
Quantity of coolant in the heating system too
low or too high.
Determine the cause for the coolant being too low or
too high in the coolant circuit.
If the quantity of coolant is too low, check the cool-
ant circuit for leaks, repair and top up the coolant.
If the quantity of coolant is too great, recycle the
coolant and refill the system with the correct vol-
ume.
Malfunction Possible cause Possible solution

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