Operating instructions
48
Daikin Altherma EHS(X/H)
Daikin Altherma integrated solar unit
008.1420944 – 05/2014
8
x
Errors, malfunctions and messages
Room cooler does
not cool
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.
"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.
Coolant compressor is not working.
●
Have the heating system checked by a Daikin heating
technician.
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.
●
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.
Water quantity in the 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).
Quantity of coolant in the heating system too
low or too high.
●
Have the coolant level checked by a Daikin specialist
heating technician.
Device-internal circula-
tion pump is excessively
noisy while running
Air in the water circuit
●
Fully vent the heating system and device-internal
circulation pump.
Noises caused by vibrations.
●
Check the Altherma EHS(X/H), its components and
covers to ensure they are fastened correctly.
Bearing damage in the device-internal circula-
tion pump.
●
Have the heating system checked by a Daikin heating
technician.
Water pressure at pump inlet too low.
●
On the controller (rotary switch setting
"Info"
)
check whether there is adequate water pressure
(>0.5 bar).
●
Check that the pressure gauge is working correctly
(connect an external pressure gauge).
●
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).
●
Have the heating system checked by a Daikin heating
technician.
Malfunction
Possible cause
Possible solution
