20
Maintenance and Inspection
20
5. MAINTENANCE AND INSPECTION
5.1 Malfunction table
You can refer to the malfunction table to find out the failure cause and solution.
Power on
P01
P02
P15(system1),P25(system2)
P35(system3),P45(system4)
P04
Malfunction
Display
Reason
Resolution
Normal working
Outlet temp. Sensor failure
Inlet temp. Sensor failure
Water flow is not enough
and low differential pressure
Communication failure between
wire controller and main board
The protection system is failure
Water flow is not enough
The ambient temp. Is low
No water/little water in water
system
The high-preesure switch is broken
Electrical-heat is over heat
The temp. Sensor is broken or
short circuit
Check or change the temp. Sensor
Check or change the temp. Sensor
Check or change the temp. Sensor
Check or change the temp. Sensor
Check or change the temp. Sensor
Check or change the temp. Sensor
Check or change the temp. Sensor
Check or change the temp. Sensor
The low-preesure switch is broken
Water flow is not enough
The ambient temp. Is low
Check the pressure switch and cold circuit
Check the pressure switch and cold circuit
Check the pipe water flow and water pump
Check or change electrical-heat
Check the pipe water flow and whether
water system is jammed or not
Check the pipe water flow and whether
water system is jammed or not
Check the pipe water flow and whether
water system is jammed or not
Check each protection point of the system
Check the wire connection between
remote wire controller and main board
/
/
The temp. Sensor is broken or
short circuit
The temp. Sensor is broken or
short circuit
The temp. Sensor is broken or
short circuit
The temp. Sensor is broken or
short circuit
The temp. Sensor is broken or
short circuit
The temp. Sensor is broken or
short circuit
The temp. Sensor is broken or
short circuit
Ambient temp. Failure
System 1/2/3/4
Coil temp. Failure
System 1/2/3/4 absorb
Temp. Failure
System 1/2/3/4 anti-freeze
Temp. Failure
Using side system 1 /2/3/4
Anti-freeze temp. Failure
System 1/2/3/4 coil inlet
Temp. Failure
System 1/2/3/4 high
Pressure protection
System 1/2/3/4 low
Pressure protection
Water flow failure
Electric-heater
Overheat protection
Water inlet and outlet
Temp. Too big
System 1/2/3/4 anti-freeze
Protection
System 1/2/3/4 source side
Anti-freeze protection
System 1/2/3/4 using side
Anti-freeze protection
Anti-freeze protect level 1
Anti-freeze protect level 2
System protection
Communication failure
P17(system1),P27(system2)
P37(system3),P47(system4)
P19(system1),P29(system2)
P39(system3),P49(system4)
P191(system1),P291(system2)
P391(system3),P491(system4)
P151(system1),P251(system2)
P351(system3),P451(system4)
E11(system1),E21(system2)
E31(system3),E41(system4)
E12(system1),E22(system2)
E32(system3),E42(system4)
E03
E04
E06
E06
E17(system1),E27(system2)
E37(system3),E47(system4)
E171(system1),E271(system2)
E371(system3),E471(system4)
E19
E29
E05
E08
Water flow is not enough
and low differential pressure
Check the pipe water flow and whether
water system is jammed or not
5.2 BHB10 malfunction Table
21
5. MAINTENANCE AND INSPECTION
System 2 economizer
outlet temp.failure
System 1 anti-freeze protection
System 2 anti-freeze protection
Malfunction
Ambient temp.sensor failure
Communication failure
System 1 exhaust temp.failure
System 2 exhaust temp.failure
System 1 anti-freeze temp.failure
System 2 anti-freeze temp.failure
System 1 economizer
inlet temp.failure
System 2 economizer
inlet temp.failure
System 1 economizer
outlet temp.failure
P202
P29
Detector
display
P04
E08
P181
P281
E171
E271
P101
P201
P102
Water flow volume not enough
Canse
Communication failure between
remote wire controller and main board
The sensor is open or short circuit
Solution
Check the wire connection between
remote wire controller and main board
Check or change the sensor
Check the flow volume,water
system is jammed or not
System 1 current protection
E151
Current through compressor too heavy Check through the power supply for
compressor or short circuit
E251
Current through compressor too heavy
Water flow volume not enough
Check the flow volume,water
system is jammed or not
The sensor is open or short circuit
Check or change the sensor
The sensor is open or short circuit
Check or change the sensor
The sensor is open or short circuit
Check or change the sensor
The sensor is open or short circuit
Check or change the sensor
The sensor is open or short circuit
Check or change the sensor
The sensor is open or short circuit
Check or change the sensor
The sensor is open or short circuit
Check or change the sensor
The sensor is open or short circuit
Check or change the sensor
System 2 current protection
Check through the power supply for
compressor or short circuit
P19
P182
Compressor exhaust temp.too high
System 1 exhaust high
temp.protection
Check through the refrigerant system
P282
System 2 exhaust high
temp.protection
Compressor exhaust temp.too high
Check through the refrigerant system
Digital
display
81
81
4
9
9
01
01
02
02
71
71
\
51
51
82
82
Malfunction
System 1 failure
Ambient failure
Indicator light
1 on 1 off
5.2.2 The indicator light display of failure cause.
System 1 failure
2 on 1 off
3 on 1 off
5.2.1 The common failure cause and solution.