Wellis PASRW012, Installation Instructions Manual

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5. MAINTENANCE AND INSPECTION
5.1 Maintenance
Check the water supply device and the release often. You should avoid the condition of no water
or air entering in to system, as this will influence unit's performance and reliability. You should
clear the pool/spa filter regularly to avoid damage to the unit as a result of the dirty of clogged
filter.
The area around the unit should be dry, clean and well ventilated. Clean the side heating
exchanger regularly to maintain good heat exchange as conserve energy .
The operation pressure of the refrigerant system should only be serviced by a certified
technician .
Check the power supply and cable connection often,.Should the unit begin to operate
abnormally, switch it off and contact your certified technician.
Discharge all water in the water pump and water system ,so that freezing of the water in the
pump or water system does not occur. You should discharge the water at the bottom of
water pump if the unit will not be used for an extended period of time. You should check
the unit thoroughly and fill the system with waterfully before using it for the first time after
aprolonged period of no usage.
5.2 Trouble Shooting Guide
Malfunction
Display
Cause Solution
Water inlet temp. Sensor failure P01
The water inlet temp. Sensor is
open or short circuit
Check or change the water
inlet temp. Sensor
Water outlet temp. Sensor failure P02
The water outlet temp. sensor is
open or short circuit
Check or change the water
outlet temp. S ensor
Ambient temp. Sensor failure P04
The ambient temp. sensor is
open or short circuit
Check or change the
ambient temp. S ensor
Pipe temp. Sensor failure
P05
The pipe temp. sensor is
open or short circuit
Check or change the pipe temp.
S
ensor
Evaporator temp.Sensor failure P07
The evaporator temp. Sensor is
open or short circuit
Check or change the
evaporator temp. Sensor
Exhaust temp. Sensor failure
P08
The exhaust temp. Sensor is open or
short circuit Check or change the temp. Sensor
High pressure protect E01
The exhaust pressure is high ,
high pressure switch action
Check high pressure switch
and cooling return circuit
Low pressure protect
E02
The suction pressure is low,
Low pressure switch action
Check low pressure switch and
cooling return circuit
Flow switch failure E03
No water or litter water
in water system
Check the flow volume ,water
pump is failure or not
Temp. is too much different
between water-inlet and outlet
E06
Water flow volume not enough,Water
system pressure difference is small
Check the flow volume,water
system is jammed or not
Antifreezing under cooling mode
E07
Water flow volume not enough
Check the flow volume,water
system is jammed or not
The primary anti-freezing
protection start.
E19
Ambient temperature is too low
The second anti-freezing
protection start
E29
Ambient temperature is too low
Communication failure E08
Communication failure between remote
wire controller and main board
Check the wire connection between
remote wire controller and main board
20
6. APPENDIX
6.1 Connection of PCB illustration
Connections explanation
：
No. Symbol
Meaning
1
OUT1
Compressor of system1
（
220-230VAC
）
2
OUT2
Water pump
（
220-230VAC
）
3 OUT3
4way valve
（
220-230VAC
）
4
OUT4 High speed of fan motor
（
220-230VAC
）
5
OUT5
Low speed of fan motor
（
220-230VAC
）
6 AC-N Neutral wire
7 NET GND 12V Wire controller
8 DI01 GND
On/Off Switch(input)(no use)
9 DI02 GND
Flow switch (input)( normal close)
10
DI03 GND
Low pressure protect
11
DI04 GND
High pressure protect
12
DI05 GND
No use
13
DI06 GND
No use
14
AI01 GND
Suction temp.(input)
15
AI02 GND
Water in temp.(input)
16
AI03 GND
Water out temp.(input)
17 AI04 GND Temp. Of coil ( input)
18 AI05 GND Ambient temp.(input)
19
AI06 GND
Adjustable fan speed/Exhaust temperature
20
CN1
Primary transformer
21
CN2
Secondary transformer
22
CN6
Without use
23
CN19
Electronic expansion valve
24
5V CN16 GND
Flow meter
OUT1 OUT2 CN19
OUT3
OUT4
OUT5
PC1001
AC-N
CN1 CN2
CN 6
CN4
GND
AI06
GND
AI05
GND
AI04
GND
AI03
GND
AI02
GND
AI01
+5V
CN16
GND
CN3
3
4
3
4
12V N
ET
GND DI0
1
GND DI0
2
GND DI0
3
GND DI0
4
GND DI0
5
GND DI0
6
GND