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2.Malfunction Indicating Table.
Determine and solve the malfuction by malfuction code as below:
.Maintenance and repair
V
1.1 Check whether the exhaust equipment is normal.
1.2 Keep the unit environment dry, clean and well ventilation. Clean the side air exchanger regularly(once
per1-2 months) in order to maintain high exchange efficiency and save energy.
1.3 Often check the performance of all the parts in the unit. Check whether the working pressure of the
refrigerant system is normal. Repair and change the parts timely if there's any abnormity.
1.4 Often check whether the wiring of the power and electric system is tightened and or electric parts
perform abnormally or smells. Repair and change the parts timely if there's any abnormity.
1.5 To check the operation of every process in the unit, the operation pressure of the refrigerant system.
You should maintain or change it in time.
1.6 To check the power supply and cable connection often, there is abnormal action or bad smell about
the electrical component. If there is, please maintain or change it in time.
1.7 This appliance is intended to be used by expert or trained users in shops, in light industry and on farms,
or for commercial use by lay persons. The instructions includes a warning to disconnect the appliance
from its power source during service and when replacing.
1.Note
Malfunction
Hot water tank temperature
sensor failure
Ambient temperature sensor
failure
Discharge temperature
sensor failure
Coil
sensor
failure
temperature
Water flow protection
Water outlet temperature
sensor failure
Communication failure
Malfunction of system high
pressure protection
Water inlet temperature
sensor failure
Failure to read and write EEPROM
of wired remote control
Communication fault between the wired
remote control and adapter plate
IPM protection
Voltage is too high level
of protection
Reason
The sensor is open or short
circuit
The sensor is open or short
circuit
The sensor is open or short
circuit
The sensor is open or short
circuit
No water,little water flow or
volume too low in hydronic
system.
The sensor is open or short
circuit
Communication wire between
PCB and wire controller are
disconnected.
System 1 high pressure
switch is open
The sensor is open or short
circuit
IPM over-temperature or
over-over-current
Voltage is too high level
of protection
Resolution
Check or change the sensor
Check or change the sensor
Check or change the sensor
Check or change the sensor
Check the water flow volume,
blockage, kinked pipre or water pump
failure.
Check or change the sensor
Check the communication wire
1: Check the hydronic water system to
see if it is dirty, blocked or not.
2: Check the evaporator fin coil of the
heat pump to see if it is diry and not
allowing good airflow necessary for
good heat transfer.
3: Check the refrigerant level and
discharge some refrigerant if
overcharged.
4: Check the setting of the hot water,
reduce slightly from the highest setting.
Check or change the sensor
Turn the power off then back on after five seconds.
If after several attempts the fault persists, then
replace the wired remote controlerl.
Check the wiring for disconnection: check the plug
, the wiring into the circuit board, whether the wire
has been cut or possible short circuit.
Check the setting of the hot water,
reduce slightly from the highest setting.
Check Power input
code
E 01
E 02
E 03
E 05
E 04
E 06
E 07
E 08
E 09
E 10
E 11
E 12
E 13
E 14
E 15
