6.8 - Error message codes: errors, solutions and operating in case of error
N.B. :
Errors can be dismissed by briefly pressing the dial (manual reset)
Display
Error
Probable causes
Solutions
Temporary operation measures
while waiting for the problem to
be solved
MEMO/BUS
•Electronic board defect
•Bus wire defect
•Display screen defect
•Voltage too high on electrical
network
•Wiring error during electrical
connection (connection to
electricity provider or moisture
sensor.)
•Damage during transportation
•Replace main electronics board
or
•Replace display screen board
•Appliance non-functional
t_AIR
•Air temperature sensor defect
(Temperature of air intake)
•Sensor not functioning
•Sensor unplugged from board
•Sensor cable damaged
•Replace sensor
•Heat pump non-functional
•Electrical back-up heats water to
43°C (38°C minimum)
T_Defrost
•Evaporator sensor defect
(defrosting temperature)
•Sensor not functioning
•Sensor unplugged from board
•Sensor cable damaged
•Replace sensor
•Heat pump non-functional
•Electrical back-up heats water to
43°C (38°C minimum)
T_water
•Tank water sensor defect
•Sensor not functioning
•Sensor unplugged from board
•Sensor cable damaged
•Replace sensor
•Heat pump non-functional
clock
•Clock/timer defect
•Voltage too high on electrical
network
•Damage during transportation
•1-Press «clock settings» and set
date and time
•2-If the error message does
not disappear, replace the
electronics board
•Programmed heating periods
are no longer valid: the water is
maintained continuously at the
standard set temperature (if no
signal or control is connected to
the «external control» switch)
over press
•Heat pump pressure too high
•No water in the tank
•Water is too hot (>75°C)
•Water sensor removed from tank
•Defective water sensor
•Check that the tank has been
properly filled with water and
purged of air
•Change the water sensor
•Check that the water sensor is in
the right position in the tank
•Heat pump is non-functional
•Must be manually reset
freq. defro.
•Defrosting too often
•Insufficient airflow
•Air inlet/ outlet blocked
•Ventilation duct blocked
•Air duct is too long or has too
many elbows
•Evaporator clogged
•Set the fan at max speed (
fan
mode 2
)
•Check that the air is circulating
properly throughout the piping
circuit
•Check pipe lengths:
-6 m total length of flexible hose
-12 m total length of rigid piping
•Check the condition of all filters
on air ducts
•Check that the evaporator is clean
•Heat pump non-functional
•Electrical back-up heats water to
43°C (38°C minimum)
low pres.
•Heat pump pressure too low
•Insufficient airflow
•Air inlet/ outlet blocked
•Ventilation duct blocked
•Fan blocked or out of order
•Evaporator clogged
•Ice on evaporator
•Check that the fan is working
•Check that air is circulating
properly through the piping
circuit
•Check pipe lengths:
-6 m total length of flexible hose
-12 m total length of rigid piping
•Check the state of all filters on air
ducts
•Check that the evaporator is clean
•Heat pump non-functional
•Electrical back-up heats the water
to 43°C (38°C minimum)
overheat
•Domestic hot water overheating
(water temperature >85°C)
•Defective water sensor
•Water sensor removed from tank
•Check that the sensor is in the
right position in the tank
•Heat pump non-functional
•Resets automatically
-
installer
HEAT PUMP WATER HEATER 200 -270L AIR D/2 -
manual
-
-
installer
HEAT PUMP WATER HEATER 200 -270L AIR D/2 -
manual
-
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