Daikin EKHWMX500CA [52/68] X errors malfunctions and messages

Daikin EKHWMXB500CA [52/68] X errors malfunctions and messages
8 x Errors, malfunctions and messages
Installation and maintenance instructions
52
Daikin Altherma M ECH
2
O
Solar storage tank with heating controller
008.1446799_00 – 07/2019 – EN
E9009 AA
STB fault
Optional: STB backup
heater (EKBUxx)
Thermal contactor (STB) in the backup heater (EKBUxx) has trig-
gered.
Replace backup heater (EKBUxx).
E9010 AC Software Thermal contactor activated (water temperature > 85 °C)
E9011 C0 Fault flow sensor
Flow sensor FLS or flow
switch (outdoor unit)
Flow sensor FLS or flow switch defective.
Replace flow sensor FLS.
Replace flow switch.
E9012 C4
Fault feed flow
sensor
Feed temperature sen-
sor t
V1
(outdoor unit) or
t
V, BH
Measured value outside of the permissible value range. Sensor or
connecting cable defective.
Check, replace.
E9013 E1 OU main board def
Heat pump outdoor unit
main circuit board
Main circuit board in the heat pump outdoor unit defective.
Fan motor defective.
Check, replace.
E9014 E3
Coolant over-pres-
sure
High-pressure switch
S1PH in the refrigerant
system (outdoor unit)
Pressure in refrigerant system is too high.
High-pressure switch S1PH or fan motor defective.
Check, replace.
Poor wiring contact.
Flow rate in the heating system too low.
Filled refrigerant quantity too high.
Check, replace.
Service valves in the heat pump outdoor unit not open.
Open service valves.
E9015 E4
Coolant under-
pressure
Pressure sensor S1NPH
in the heat pump outdoor
unit
Pressure in refrigerant system too low.
Refrigerant quantity too low.
Check, eliminate cause, top up refrigerant.
Pressure sensor S1NPH in the heat pump outdoor unit defective.
Temperature sensor of fin heat exchanger R4T in the heat pump
outdoor unit defective.
Solenoid valve in the heat pump outdoor unit not opening.
Main circuit board in the heat pump outdoor unit defective.
Check, replace.
E9016 E5 Load protec comp
Electronic overload pro-
tection in the refrigerant
compressor (outdoor
unit)
Refrigerant compressor overload protection has triggered. Pressure
difference in the refrigerant circuit between high and low pressure
side too high (>
26 bar).
Refrigerant compressor defective.
Inverter circuit board in the heat pump outdoor unit defective.
Refrigerant compressor / inverter circuit board wiring, poor con-
tact.
Filled refrigerant quantity too high.
Check, replace.
Service valves in the heat pump outdoor unit not open.
Open service valves.
E9017 E7 Fan blocked
Fan motor in the heat
pump outdoor unit
A fan in the heat pump outdoor unit is blocked.
Check fan for presence of dirt or blockages; if necessary,
clean and free up.
Fan motor defective.
Fan motor wiring, poor contact.
Overvoltage at fan motor.
Fuse in the heat pump outdoor unit defective.
Inverter circuit board in the heat pump outdoor unit defective.
Check, replace.
E9018 E9 Expansion valve
Electronic expansion
valve (outdoor unit)
The electronic expansion valve in the heat pump outdoor unit is
defective.
Check, replace.
E9019 EC
Hot water temper-
ature > 85 °C
Storage tank tempera-
ture sensor t
DHW
The storage tank temperature sensor t
DHW
delivers a temperature
value >
85 °C.
Sensor or connecting cable defective.
Check, replace.
Code Malfunction /
error message
Component/
Designation
Causes and possible fault elimination
Display Internal

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