16
ENGLISH
Displayed error message and related
equipment failure
Component
Possible cause
Putting it right, other possible
causes and solutions
PP 1
Compressor and blower
have stopped
Water temperature
sensor
Sensor signal wire or supply wire is
broken, or the sensor is defective.
Check the wires and connections,
replace defective ones. If the failure
persists, replace the sensor.
PP 2
Compressor and blower
have stopped.
Temperature sensor at
compressor discharge
Sensor signal wire or supply wire is
broken, or the sensor is defective
Check the wires and connections,
replace defective ones. If the failure
persists, replace the sensor.
PP 3
Heat pump runs without
interruption.
Defrosting system
Defrosting had been insuffi cient and the
control system stopped the heat pump.
Increase slightly water fl ow rate through
the heat pump to increase temperature
in the evaporator.
PP 5
Compressor and blower
have stopped.
Ambient air tempera-
ture sensor
Sensor signal wire or supply wire is
broken, or the sensor is defective
Check the wires and connections,
replace defective ones. If the failure
persists, replace the sensor.
PP 7
First stage of frost
rotection
Either ambient temperature, or inlet
water temperature is too low.
Filtration pump will start operation.
PP 7
Second stage of frost
protection
Either ambient temperature, or inlet
water temperature is too low.
In addition to fi ltration pump also the
heat pump will start operation.
EE 1
Compressor and blower
have stopped.
Maximum./ Minimum
pressure switch
Low water fl ow rate.
Clean the fi ltration unit and open
fully the bypass.
Protection is disconnected or defective
1)
Surplus coolant in the system
1)
EE 2
Compressor and blower
have stopped.
Minimum pressure
switch
Lack of coolant in the system.
1)
Coolant leakage from the system.
1)
EE 3
Compressor and blower
have stopped.
Flow rate sensor
Water fl ow rate is low.
Flow rate sensor signal wire or supply
wire is broken, or the fl ow rate sensor
is defective.
Clean the fi ltration unit and open fully
the bypass.
Check connections and wires, replace
them or replace the control unit.
EE 4
Equipment cannot be
switched ON.
Safety witch
Action of the safety switch.
Have checked the electrical wiring.
EE 5
Compressor and blower
have stopped.
Ambient air
temperature sensor
Ambient temperature is lower than set.
EE 6
Compressor and blower
have stopped
Temperature sensor at
compressor discharge
The temperature in excess of 105 °C on the
compressor discharge was detected more than
three times within the period of 24 hours.
The problem that may be caused by
external conditions. Coolant leakage.
Clogged capillary tube.
EE 7
Equipment cannot be
switched on
Phase protection
Incorrect phase connection.
Have it checked.
EE 8
Control panel does not
communicate
Communication error
A problem of equipment communication
with the control unit.
Check the connections of signal cable.
Note:
1) A specialized technician of refrigeration equipment shall be contacted to check the system.
IMPORTANT:
In case of a necessary intervention into electrical wiring an authorised service shall be contacted.
7.3
ERROR MESSAGES AND TROUBLESHOOTING
Содержание Azuro BP-100HS-A
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