8
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Errors, malfunctions and messages
Daikin Altherma EHS(X/H)
Daikin Altherma integrated solar unit
008.1420944 – 05/2014
Operating instructions
47
Heating does not warm
up enough
Water flow too low.
●
Check that all stop valves of the water circuit are
completely open.
●
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.
●
Have the heating system checked by a Daikin heating
technician.
Target value range is too low.
●
Increase parameter [Heat-Slope].
●
Have the heating system checked by a Daikin heating
technician.
Weather-controlled flow temperature regula-
tion.
●
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"
rotary switch
position.
Optional backup heater (EKBUxx) or alterna-
tive heater not switched on.
●
Have the heating system checked by a Daikin heating
technician.
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 7.5).
Hot water supply is taking too much of the out-
put of the heat pump.
●
Have the heating system checked by a Daikin heating
technician.
Hot water does not warm
up
DIP switch configured incorrectly
●
Have the heating system checked by a Daikin heating
technician.
Hot water supply switched off (e.g. switching
time program is in the economy phase,
parameters for hot water supply have been
set incorrectly).
●
Check the operating mode setting.
●
Check the request parameters.
Storage tank charging temperature too low.
●
Increase the target hot water temperature.
Draw-off rate too high.
●
Reduce the draw-off rate, limit throughput.
Output of heat pump too low.
●
Check the switching times for room heating and hot
water supply for overlaps.
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 7.5).
Optional backup heater (EKBUxx) or alterna-
tive heater not switched on.
●
Have the heating system checked by a Daikin heating
technician.
Malfunction
Possible cause
Possible solution
