8
x
Errors, malfunctions and messages
Daikin Altherma M ECH
2
O
Solar storage tank with heating controller
008.1446799_00 – 07/2019 – EN
Installation and maintenance instructions
49
Internal circulation pump
generates excessively
high operating noises
Air in the water circuit.
●
Completely vent the heating system and the internal
circulation pump.
Noises caused by vibrations.
●
Check the Altherma M ECH
2
O, its components and
covers to ensure they are fastened correctly.
Bearing damage in the internal circulation
pump
●
Reduce pump speed (parameters [Min Perform Pump]
and [Max Perform Pump]).
●
Replace the internal circulation pump.
Water pressure at pump inlet too low.
●
On the controller (rotary switch position
"Info"
),
check whether sufficient water pressure (>
0.5
bar) is
available; if necessary, top up heating water.
●
Check whether the pressure gauge is working
correctly (connection of an external pressure gauge).
●
Check admission pressure in the expansion tank and
water pressure; if necessary, top up heating water and
adjust admission pressure (see chap.
Safety pressure relief
valve is leaking or always
open.
Expansion tank is defective.
●
Replace expansion tank.
Water pressure in heating system is too high.
●
On the controller (rotary switch position
"Info"
),
check whether the water pressure is below the
specified maximum pressure. If necessary, drain suffi-
cient water until the pressure is in the middle of the
permissible range.
Safety pressure relief valve is stuck.
●
Check safety pressure relief valve and if necessary,
replace it.
– Turn the red knob on the safety pressure relief
valve counterclockwise. If you can hear a rattling
noise, the safety pressure relief valve needs
replacing.
Tab.
8-1 Possible malfunctions on the Altherma M ECH
2
O
Malfunction
Possible cause
Possible solution
Содержание Altherma EBLQ05C2V3
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