22
A. Form of Troubleshooting
Check whe ther ther e is fault on
pressur e switch or r efriger ant loop
Check whe ther syst em compre ssor
is in norma l operati on
Protect ion/fau lt
Standby
Normal bo oting
Wat er inlet te mp. senso r error
Ambient tem p. sensor e rr or
Antifre ezing pro tection
Wat er flow pro tection
Cause
Wat er inlet te mp sensor i s in open
circuit o r short cir cuit
Check and rep lace temp . se nsor
Wat er outlet t emp senso r is in
open circ uit or shor t circuit
Ambient t emp senso r is in open
circuit o r short cir cuit
Check and rep lace temp . se nsor
Check and rep lace temp . se nsor
Way o f troublesh ooting
Abnormal co mmunica ti on betwee n
remote cont roller an d ma inboard
Flow is inade quate
Check wat er flow , and w hether
water sys tem is dama ged
Ambient tem peratur e is t oo low
Ambient tem peratur e is t oo low
There is no or li ttle wate r in w ater syst em
Check wat er flow , and w hether
water sys tem is dama ged
Fault
display
NO
NO
P01
P02
P04
P07
P08
High-pr essure pr otectio n
Low-pre ssure pro tection
E01
E03
E02
Suction t emp. sens or is in open
circuit o r short cir cuit
Check and rep lace temp . se nsor
Exhaust t emp. Sens or is in open
circuit o r short cir cuit
Check and rep lace temp . se nsor
High-pres sure swit ch i s disconn ec ted
Low-press ure switc h is d isconne ct ed
E07
E19
E29
Compresso r load is too l ar ge
Suction p ressure s ensor is in o pen
circuit o r short cir cuit
Exhaust p ressure s ensor is in o pen
circuit o r short cir cuit
Winter Le vel I antif reezing
protect ion
PP2
Input volta ge is too low, r es ulting in
too high inpu t current
Input curre nt is too hig h, e xceedin g
effec ti ve value fo r pr otectio n current hal t
DC bus voltag e>DC bus over vo ltage
halt pro tection val ue
DC bus voltag e<DC bus over vo ltage
halt pr otection va lue
IPM current i s too large
Temperature o f IPM modul e is t oo high
Sensor is in sh ort circu it o r open circ ui t
Temperature o f power com po nent is
too high
Fault of curr ent sampl in g
Compresso r current i s to o high
Input volta ge is in defa ul t phase
Default pha se, step ou t or h ardware
damage on act uator
Fault of DSP and commu ni cation bo ard
Fault of DSP and PFC
Fault of curr ent sampl in g
Chip error
Inadequat e magneti c fo rce of comp re ssor
Check and r eplace ex haust pre ssure
sensor
Check and r eplace su ction pre ssure
sensor
Check and m easure in put volta ge
Check and m easure in put curre nt
Check and m easure bu s voltage
Check and m easure bu s voltage
Check and m easure cu rrent as we ll
as adjus t
Check and m easure cu rrent as we ll
as adjus t
Check and r eplace se nsor
Reduce te mperatu re and chec k
c ompon ent
Check and m easure cu rrent as we ll
as adjust
Check and m easure vo ltage as we ll
as adjust
Check and m easure vo ltage and
check fre quency bo ard hardw are
Check com municat ion conne ction
Check com municat ion conne ction
Check com municat ion conne ction
Check and m easure cu rrent as we ll
as adjust
P181
E21
E22
E24
E25
E27
E28
E29
E30
E32
E33
E35
E36
Wat er inlet te mp.sens or error
Suction t emp. sens or error
Exhaust t emp. sens or error
Suction p ressure s ensor err or
Exhaust pre ssure sen so r error
Winter Le vel II anti freezin g
protect ion
AC input unde rvoltag e
protectio n
Exhaust ove r heat
protectio n
AC input over current
protectio n halt
DC bus over voltage
protect ion
DC bus unde rvoltag e
protect ion
IPM overc urrent pr otectio n
IPM modul e overhea t
protect ion
Radiato r tempera ture
sensor er ror
Power com ponent ov erheat
protect ion halt
IPM current s ampling
Compres sor overc urrent
protect ion hault
Input vol tage defa ult phase
Failure o f compres sor
booting
Fault of comm unicati on
between DSP and PFC
Fault of co mmunica tion
between D SP and
communi cation bo ard
Input volta ge sampli ng
Fault of EEPR OM
Compresso r flux weak en ing
protectio n alarm
Fault o f com mun ication be twe en
actua tor a nd Pc 8002
Check whe ther ther e is fault on
pressur e switch or r efriger ant loop
Check whe ther chip i s damaged a nd
replace c hip
PP1
E37
E38
E39
E40
E41
EE8
Form of Troubleshooting
Form of Troubleshooting
B. Or make judgment and troubleshooting by reference to the following form
Heat pump
cannot
be starte d
Wat er pump is
running w ith
high nois e or
without w ater
Heat pump
capacit y is low,
compres sor
do not stop
High comp ressor
exhaust
Low press ure
problem
of the syst em
Compres sor do
not run
High nois e of
compres sor
Fan do not ru n
The compr essor
runs but he at
pump has no t
heating o r
cooling c apacity
Low outle t water
tempera ture
Low water f low
protect ion