13
Check the wate r suppl y device and th e release often. You shoul d avoi d 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 shoul d clear the pool/sp a filte r regularl y
t o avoi d damag e t o the unit as a result of dirt y or clogge d filte r.
The area around th e uni t shoul d b e dr y, clean and well ventilated . Clean th e side heatin g exchanger
regularl y t o maintai n good heat exchange and conserv e energ y .
The operatio n pressure of th e refrigeran t system should only b e serviced b y a certifie d technician .
Check th e power supply an d cable connectio n often,.Should th e uni t begin to operate abnormall y,
switch it off and contac t th e qualifie d technician .
5.1 Maintenanc e
5.2 Trouble Shooting Guide
Malfunctio n
LED
Controlle r
Water inle t temp.
Sensor failur e
Coil sensor
failur e
Temp . diff erential between
water-i n and water-ou t
is t oo l arg e
Anti freezin g
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 flo w rate not
enoug h
Check th e water flo w volume ,
or system obstruction .
Gas System pressure
is too hi gh
Resolutio n
Check t hrough t he h igh 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 i s suitable
Outlet wate r is too lo w
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 i n winte r
Check through the l ow p ressure switch
and th e gas system p ressure t o judg e whethe r
ther e is l eakin g or the freo n is not enough;
3times water-i n and
water-out t emp.diffe rece
protectioni n 30 minute s
Check th e water flo w rate, or
water system is jamme d or no t
Water flo w volume not
enough,water pressure
difference i s too lo w
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 i n winte r
Gas System pressure
is too lo w
Ambien t or inle t wate r
temp . i s to o lo w
Flow switch failur e
E03
No water/little water
in water system.
Check the water flo w volume,
water pump and flo w switch has
failed
or no t
Ambien t or inle t wate r
temp . i s 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.
