MICROWELL HP 900 Compact - 7.4 Failure Reports and Their Elimination

Installation and user manual | 19
HEAT PUMP MICROWELL HP COMPACT
7.3 Warranty conditions, service and spare parts
The warranty is applicable to cases described in the warranty certificate. The technical service as well
as the spare parts are provided by the manufacturer, MICROWELL, spol. s.r.o. through their service
centers.
7.4 Failure reports and their elimination
Failure report Operating status of the heat
pump
Possible cause Elimination, other possible
cause (in case the first trial
was not successful)
EE1
Decommissioning;
acoustic warning
Water temperature
sensor failure T1 /
interrupted or short-
circuited sensor
Check and change the
sensor
EE2
Decommissioning
Surrounding air
temperature sensor
failure T2/ interrupted or
short-circuited sensor
Check and change the
sensor
EE3
Acoustic warning
Compressor turning off
sensor failure T3
Check and change the
sensor
EE4
Optical warning
Compressor turning off
sensor failure T4
Check and change the
sensor
EEb
Decommissioning in
cca. 1-2 minutes after
turning on; acoustic
warning
Weak or high water
flow*; No closure of the
flow switch or failure of
the flow switch
Adjust the flow of the
swimming pool water
pump or change the flow
switch on the heat pump
EE6
Decommissioning;
acoustic warning
High temperature on the
water outlet
Check the refrigerant
satus
EE8
Acoustic warning
Failure of the cable
communication of the
controller
Check the control cable
between the control
board and the control
panel
* For proper operations, there must be a water flow through the heat pump exchanger in range of
4-6 m
3
/ hour. In the case of water flow exceeding 10m
3
/h the heat pump will turn itself off and an
error notice EEb will pop up. Repeated error notice or repeated exposure of the heat pump to the
water flow higher than 8m
3
/h will cause irreversible damage to flow switch with permanent error
notice EEb and the heat pump will be turned off. Please contact your distributor or service
department, the flow switch needs to be replaced.
Note: Contact your authorised servise department in case of your need of any interference
with the electric installation inside the device.
Please do not get disturbed by ‘F –d’ report. It is a factory
settings option to change specific technical setup of the
compressor operations. For safety reasons this is preset for
optimal operations and locked for customer changes. In order to
go back to Stand-by or Operational mode, simply take no action
for 10 seconds.