Owner`s manual

10. System Malfunction Schedule
23
1. Check whether the temperature thermistor of the
water tank is connected loose or not .
2. Connect temperature thermistor of the of the water
tank tight or change the temperature thermistor.
upper part of
the
upper part
1. Check whether the temperature thermistor of the is connected
loose or not .
2. Connect temperature thermistor of coil tight or change the
temperature thermistor.
coil
1. Check whether the exhaust temperature thermistor is connected
loose or not .
2. Connect exhaust temperature thermistor tight or change the
exhaust temperature thermistor.
1. Check whether the temperature thermistor of the
is connected loose or not .
2. Connect temperature thermistor of the tight or
change the temperature thermistor.
solar collector
solar collector
1. Check whether the ambient temperature thermistor is connected
loose or not .
2. Connect ambient temperature thermistor tight or change the
ambient temperature thermistor
1.Check whether the temperature thermistor of the bottom of the
water tank is connected loose or not .
2.Connect temperature thermistor of the bottom of the water tank
tight or change the temperature thermistor.
PP5
PP6
PP1
PP2
PP3
Malfunction and
Protection Name
Fault
code
Solution
Hot water tank
temp. Sensor failure
Water outlet
temp.Sensor failure
System coil temp.
Sensor failure
System suction
temp. sensor failure
Solar collector
temp. sensor failure
Ambient temp. sensor
failure
PP4
Normal start
Standby
PP7
Water flow protection
1:Check whether lack of water in the system or cycle heating
system pipe exist air and need discharge the air.
2:check the water flow volume water pump is failure or not.
Check whether lack of water in the system or cycle heating system
pipe exist air and need discharge the air , or the water temperature
is too high or the refrigerant is too much or high pressure switch has
been damaged.
EE1
EE2
EE3
EE4
The system lack of refrigerant or the low pressure switch has been
damaged.
System high pressure
protection
System low pressure
protection
aux. electric heater
overheat protection
Communication wires disconnect or Connection Error.
EE8
Check whether the three phase power supply is normal or not,
whether the phase is lose or the phase sequence is error.
Whether the running current is large than the standard current,
check the ac.contactor connection is normal or not.
System is running defrost program.
Power phase
sequence protection
Communication failure
The aux. electric heater is broken ,so the unit make overheat protection
only effective to the unit with auxiliary electrical heater
lack of water protection
Unit defrosting status
AIR TO WATER HEAT PUMP WATER HEATERAIR TO WATER HEAT PUMP WATER HEATER