Daikin Altherma EHS04P30B Instructions D'installation Et D'utilisation page 139

Malfunction
Water flow too low.
Target value range is too low.
Weather-controlled flow temperature regula-
Heating does not warm
tion.
up enough
Optional Backup-Heater (EKBUxx) or alterna-
tive heater not switched on.
Water quantity in heating system too low
Hot water supply is taking too much of the out-
put of the heat pump.
DIP switch configured incorrectly
Hot water supply switched off (e.g. switching
time program is in the economy phase,
parameters for hot water supply have been
set incorrectly).
Storage tank charging temperature too low.
Draw-off rate too high.
Hot water does not warm Output of heat pump too low.
up
Water quantity in heating system too low.
Optional Backup-Heater (EKBUxx) or alterna-
tive heater not switched on.
Daikin Altherma EHS(X/H)
Daikin Altherma integrated solar unit
008.1441399_02 – 01/2021 – EN
8 x
Possible cause
Errors, malfunctions and messages
Possible solution
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").
Increase parameter [Heat-Slope].
Increase parameter [T vbh1 max].
Increase parameter [Max T-Flow].
Check the settings on the "HC Configuration" level of
the parameters [T-Outside lim day], [Heat-Slope] and
the settings in the "Set Temp Day"
position.
Check the mains supply to the Backup-Heater
(EKBUxx).
Thermal protection switch (STB) on Backup-Heater
(EKBUxx) has been triggered. Unlock.
Check the parameters [Function Heating] and
[BUH s1 power] and [BUH s2 power].
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).
Check the settings of the parameter [Function
Heating] in level "Configuration", sub-level "Setup".
Check the settings of the parameter [Power DHW] in
level "Configuration", sub-level "System ".
Check DIP switch setting on board A1P
(see section 8.4).
Check the operating mode setting.
Check the request parameters.
Increase the target hot water temperature.
Reduce the draw-off rate, limit throughput.
Check the switching times for room heating and hot
water supply for overlaps.
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).
Check the mains supply to the Backup-Heater
(EKBUxx).
Thermal protection switch (STB) on Backup-Heater
(EKBUxx) has been triggered. Unlock.
Check the parameters [Function Heating] and
[BUH s1 power] and [BUH s2 power].
)
rotary switch
Installation and operating instructions
57