Daikin EKHWMX500CA [51/68] X errors malfunctions and messages

Daikin EKHWMX300CA [51/68] X errors malfunctions and messages
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
51
E9000
Temporary internal
message
Not relevant for proper system operation.
E9001 80 Fault T-return
Return flow temperature
sensor t
R2
Sensor or connecting cable defective.
Check, replace.
E9002 81
Fault feed flow
sensor
Feed temperature sen-
sor t
V1
or t
V, BH
Sensor or connecting cable defective.
Check, replace.
E9003 89 Fault frost protec
Plate heat exchanger
(PWT)
Measured value t
V1
< 0°C
Failure of the frost protection function for the plate heat
exchanger because the water flow is too low. See fault code
E9004 / 7H.
Failure of the frost protection function for the plate heat
exchanger because there is a lack of refrigerant in the system.
See fault code E9015 / E4.
E9004 7H Fault volume flow FlowSensorFLS
Water flow is too low or non-existent. Required minimum water flow
rate:
5-7 kW 11-16 kW
"Heating" operating mode 480 l/h
600 l/h
"Cooling" operating mode 600 l/h 900 l/h
Automatic defrost function active 780 l/h 900 l/h
Check the following items:
All stop valves of the water circuit must be completely open.
Optional water filters must not be contaminated.
Heating system must run within its operating range.
Heating system and internal circulation pump must be
completely vented.
On the controller (rotary switch position "Info"
), check
whether sufficient water pressure (> 0.5 bar) is available; if
necessary, top up heating water.
Check function of the 3-way switch valve 3UVB1 (compare
actual position of 3UVB1 with indicated position BPV in
parameter [Overview]).
Does this fault occur during defrosting in room heating or hot
water preparation operating mode? With optional backup heater:
check its power supply and fuses.
Check fuses (pump fuse (FU1) on printed circuit board A1P
(outdoor unit) and conductor plate fuse (F1) on RoCon BM2C
printed circuit board).
Check flow sensor FLS (outdoor unit) for soiling and function; if
necessary, clean, replace.
Frost damage on the plate heat exchanger (outdoor unit)
E9005 8F
Feed temperature
t
V, BH
> 75 °C
Feed temperature sen-
sor t
V, BH
Feed temperature of backup heater (t
V, BH
) is too high.
Feed temperature sensor delivers incorrect values. Temperature
sensor or connecting cable defective.
Check, replace.
E9006 8H
Feed temperature
t
V, BH
> 65 °C
Feed temperature sen-
sor t
V, BH
E9007 A1 IU main board def
Printed circuit board A1P
(outdoor unit)
Communication between heat pump outdoor unit and internal unit
disturbed.
Electromagnetic influences.
Perform reset.
Printed circuit board A1P defective.
Replace printed circuit board A1P.
EEPROM read error
E9008 A5
Coolant tempera-
ture
Temperature sensor
(refrigerant fluid side) t
L2
Refrigerant temperature outside of the valid range
No heat consumption at the plate heat exchanger.
Check flow rate.
If flow rate is OK, replace refrigerant temperature sensor.
Code Malfunction /
error message
Component/
Designation
Causes and possible fault elimination
Display Internal

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