HTW VAX HTW-ATS-O-500VAX, Инструкция для владельца и по установке

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23
malfunction
D Return gas temp. sensor
detect range
-9 ~ 99°C
Actual testing value. Error code P4
will be shown in case of a
malfunction
E Ambient temp. sensor
detect range
-9 ~ 99°C
Actual testing value. Error code P5
will be shown in case of a
malfunction
F Electronic expansion valve step 10 ~ 47 step N*10 step
H Temp of solar thermal collector 0-140
℃
Measured value
，
if failure
，
show P6
Malfunctioning of the unit and error codes
When an error occurs or the protection mode is set automatically, the circuit board and the wired
controller will both display the error message.
Protection/
Malfunction
Error
code
LED
indicator
Possible reasons Corrective actions
Standby Dark
Normal
running
Bright
Lower tank
water temp.
sensor failure
P1
☆
●
(1flash 1
dark)
1) The sensor open
circuit
2) The sensor short
circuit
3)PCB board failure
1) Check the sensor
connection
2) Replace the sensor
3)change the PCB board
Upper tank
water temp.
sensor failure
P2
☆☆
●
(2 flashes 1
dark)
1) The sensor open
circuit
2) The sensor short
circuit
3) PCB board failure
1) Check the sensor
connection
2) Replace the sensor
3) change the PCB board
Evaporator
coil
temp.
sensor failure
P3
☆☆☆
●
(3 flashes 1
dark)
1) The sensor open
circuit
2) The sensor short
circuit
3) PCB board failure
1) Check the sensor
connection
2) Replace the sensor
3) change the PCB board
Return air
temp sensor
failure
P4
☆☆☆☆
●
(4 flashes 1
dark)
1) The sensor open
circuit
2) The sensor short
circuit
3) PCB board failure
1) Check the sensor
connection
2) Replace the sensor
3) change the PCB board
Ambient P5
☆☆☆☆☆
1) The sensor open 1) Check the sensor