I n s t a l l a t i o n a n d u s e r m a n u a l
HP1100/1500 COMPACT PREMIUM
V e r s i o n : 0 1 / 2 0 1 8
P a g e 2 8 / 2 8
H
E
A
T
P
U
M
P
MI
C
R
O
W
E
L
L H
P
7.5
Failure reports
Please find below table containing list of failure reports with their explanation and suggested solution.
In order to physically locate the sensor please refer
to section 3.6 Block wiring diagram of the PCB
board.
Failure
report
(displayed
on diplay)
Operating status of
the heat pump
Description of the failure
report
Sensor
characteristic
Failure report resolution
EE1
Heat pump
decommissioned;
acoustic warning
Water temperature sensor
failure (T2) / interrupted
or short-circuited sensor
5k
Ω
Check the sensor, possibly
change the sensor
EE2
Heat pump
decommissioned
Surrounding air
temperature sensor
failure (T3) / interrupted
or short-circuited sensor
5kΩ
Check the sensor, possibly
change the sensor
EE3
Heat pump
decommissioned;
Acoustic warning
Compressor discharge
sensor failure (T4) /
interrupted or short-
circuited sensor
50
kΩ
Check the sensor, possibly
change the sensor
EE4
Optical warning
Timed defrosting
Evaporator temperature
sensor failure (T1) /
interrupted or short-
circuited sensor
5kΩ
Check the sensor, possibly
change the sensor
EE5
Heat pump
decommissioned
in app. 1-2
minutes after
turning on;
acoustic warning
None/Weak/High water
flow; No closure of the
flow switch or failure of
the flow switch
Flow switch
Set the water flow to 4-
6m
3
/h or check the flow
switch
EE6
Heat pump
decommissioned;
acoustic warning
High temperature on
compressor discharge
(T4)
50kΩ
Please refer
to section 7.6
Troubleshooting
EE7
Optical warning
Electric leakage
protection
-
Check the power supply of
the unit, circuit breaker. In
order to remove EE7 optical
warning, power supply needs
to be turned off and on
EE8
Acoustic warning
Failure of the cable
communication of the
controller
-
Check the control cable
between the control board
and the control digital panel
EE9
Heat pump
decommissioned
High/Low pressure switch
protection
In order to remove EE9
optical warning, power
supply needs to be turned off
and on
-09
Heat pump
decommissioned
Temperature sensor(s)
failure
5kΩ
Temperature sensors or their
bus inputs are burnt out.
Sensors and/or possible the
whole regulator with
motherboard must be
replaced.
EE C
Heat pump
decommissioned
Ambient air temperature
lower than -15°C
-
Please check ambient air
temperature of the
