13
Check the wate r supply device and th e release often. You should avoid the conditio n of no water or air enterin g
into system, as this will influenc e unit' s performanc e and reliabilit y. You should clear the pool/sp a filte r regularl y
to avoid damag e to the unit as a result of dirty or clogge d filte r.
The area around the uni t shoul d be dry, clean and well ventilated . Clean th e side heatin g exchanger
regularl y to maintai n good heat exchange and conserve energy .
The operatio n pressure of th e refrigeran t system should only be serviced by a certifie d technician .
Check th e power supply and cable connectio n often,.Should the uni t begin to operate abnormall y,
switch it off and contact th e qualifie d technician .
5.1 Maintenanc e
5.2 Trouble Shooting Guide
Malfunctio n
LED
Controlle r
Water inlet temp.
Sensor failur e
Coil sensor
failur e
Temp . diff erential between
water-i n and water-ou t
is too large
Anti freezing
under coolin g mod e
High pressure protec t
P01
P02
P05
P04
E06
E07
E19
E29
E01
E02
E06
Reason
The sensor is open
or short circui t
Check or change th e sensor
Water flow rate not
enoug h
Check th e water flo w volume ,
or system obstruction .
Gas System pressure
is too high
Resolution
Check through the high pressure switc h
and th e gas system pressure to judg e whethe r
th e gas loo p is blocked or th e freon is suitable
Outlet water is too low
Water outl et temp.
Sensor failur e
The sensor is open
or short circui t
Check or change th e sensor
The sensor is open
or short circui t
Check or change th e sensor
Ambient sensor failure
The sensor is open
or short circui t
Check or change th e sensor
Check th e water flo w volum e
or outlet water temp . sensor
The first class freezin g
protection in winte r
Check through the low pressure switch
and th e gas system p ressure t o
judg e whethe r
ther e is leaking or the freon is not enough;
3times water-i n and
water-out temp.diffe rece
protectioni n 30 minute s
Check th e water flo w rate, or
water system is jamme d or not
Water flo w volume not
enough,water pressure
difference is too low
Communication failur e
E08
LED controlle r and The
PCB connectio n failur e
Check th e wire connectio n
The second class freezin g
protection in winte r
Gas System pressure
is too low
Ambien t or inle t wate r
temp . is to o lo w
Flow switch failur e
E03
No water/little water
in water system.
Check the water flow volume,
water pump and flo w switch has failed or not
Ambien t or inle t wate r
temp . is to o lowe r
Low pressure protec t
5. MAINTENANCE AND INSPECTION
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 water fully before using it for the first time
after a prolonged period of no usage.
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