auer HRC70 17 - ERROR HANDLING AND ALERTS; Troubleshooting Non-Alert Errors

- INSTALLER HIGHTEMPERATURE ENERGY EFFICIENT HEAT PUMP MANUAL-
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6.6 - Errors which are not signalled by error message or alert
Error not displayed on screen Possible cause
s
Solutions
•The installation is in summer mode
•The room thermostat is not sending a heating request
•Check values of PAR.209 and 215 and switch to
winter mode then auto
•Check the room thermostat is connected
properly to the power supply and the pilot
•Check that the room thermostat
is configured correctly
• There is no voltage at the appliance's terminals
•Check the power supply throughout the heat pump
(check there is voltage and the values:
compressor start-up is prevented
if voltage is too high or too low)
•The circuit breaker cuts the power off at each start-up
•The nominal current is insufficient for the circuit breaker
•Check the ground insulation on the compressors,
the fan and other electrical components
(eg. the circulator pump)
•The circuit breaker used on the heat pump
will not allow a motor start-up:
install a D-curve circuit breaker
•One of the heat pump electrical components is defective
•The heat pump is too small
to meet heating requirements
•Check that all the start-up stages of the heat pump
engage properly
•Check the PT/OP and LS cables
and PAR.217 and 218
•Check that heat pump back-up engages
properly: it must be properly
configured.
•No check valve on boiler
•Check that electrical back-up is
enabled
•Check the value of the outdoor temperature sensor
readin
g
• Compressor(s) not working
•Check the status of the progressive starters
•Check the three phase cabling
•The compressor has been stopped
by its internal thermal safety device
•Check that operating conditions are within the
authorised range
The heat pump is heavily blocked by ice
•Condensates drainage is blocked
•The air temperature sensor is giving an incorrect reading
•The de-icing sensor is giving an incorrect reading
•Melt the ice by forcing de-icing
with hot water and stopping the heat pump
(do not use tools to break or
unstick the ice)
•Check that the outside air temperature and de-icing
sensors are correctly positioned and reading the
temperatures properly
•Fit a heater cable (available as an accessory)
for condensates drainage
The heat pump
will not start
The heat pump will start up
but does not produce enough heat