Haier hp250m1 Manual

Heat Pump Water Heater
Installation and Service Manual
Model
HP200M1
HP250M1
Please read this manual carefully prior to your use of this water heater.
The appearance of the water heater given in this manual is for reference only.

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2
Contents
1. Product safety statement.......................................................................................................... 3
2. Functionings & principles .................................................................................................... 4
3. Technical parameters ............................................................................................................ 5
4. Description of parts and components ................................................................................. 6
5. Installation introduction ........................................................................................................11
6. Operating and settings.............................................................................................................. 13
7. Faults and protection ............................................................................................................... 26
8. Faults and protection .................................................................................................................17
9. The method of dismantling products ........................................................................................24
10. Repairs common tools ............................................................................................................29

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3
1.Productsafetystatement
1. This appliance can be used by children aged from 8 years and above and persons with reduced
physical, sensory or mental capabilities or lack of experience and knowledge if they have been
given supervision or instruction concerning use of the appliance in a safe way and understand the
hazards involved. Children shall not play with the appliance. Cleaning and user maintenance shall
not be made by children without supervision.
2. Children shall be closely supervised to make sure they stay away from this product.
3. The water may drip from the discharge pipe of the pressure relief device and this pipe must be
left open to the atmosphere.
Safety instructions (to be followed at any time)
Refrigerant: R134a; When handling product, you should
- No smoking
- Prevent the accumulation of electrostatic charges
- Work in a well ventilated place.
- Avoid contact with the skin and eyes
- Do not inhale the vapours
- Evacuate the hazardous area
- Stop the leakage

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4
2.Functionings&principles
A low-pressure liquid refrigerant is vaporized in the heat pump's evaporator and passed into the
compressor. As the pressure of the refrigerant increases, so does its temperature. The heated
refrigerant runs through a condenser coil within the storage tank, transferring heat to the water
stored there. As the refrigerant delivers its heat to the water, it cools and condenses, and then
passes through an expansion valve where the pressure is reduced and the cycle starts over.

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5
3.Technicalparameters

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6
4.Descriptionofpartsandcomponents
Heat pump structure

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7
Exploded view

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He
a
1. C
The
and
to t
h
2. E
v
Eva
p
3. C
A c
o
con
d
a
t pump s
y
ompressor
compresso
r
compressed
i
h
e condenser
v
aporato
r
p
orato
r
effec
t
ondenser
o
ndenser: hi
g
d
ensation, th
e
y
stem co
m
is to effect
a
i
nto high te
m
heat exchan
g
t
s: it makes t
h
g
h-temperat
u
e
refrigerant
v
Wiring
b
ox
m
ponents
a
low-tempe
r
m
perature an
d
g
e
r
.
h
e liquid refr
i
u
re high-pres
s
v
apor discha
r
8
r
ature low-pr
e
d
pressure of
i
gerant abso
r
s
ure refriger
a
r
ge heat, the
h
e
ssure evap
o
the superhea
t
r
bs heat and i
s
a
nt vapor is
h
eat is absor
b
o
rato
r
refrige
r
t
ed vapo
r
, a
n
s
evaporated
condensed i
n
b
ed by the he
a
Inspirato
r
Exhaust p
i
r
ant vapo
r
s
u
n
d then disch
a
into steam.
n
to liquid, d
u
a
ting mediu
m
r
y pipe
i
pe
u
cked
a
rged
u
ring
m
.

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4. T
h
The
pres
the
t
5. F
i
It’s
i
can
6.
H
Hig
h
syst
e
7. S
e
Ser
v
nee
d
h
ermal expa
n
refrigerant
p
sure is redu
c
t
hrottling pro
i
lte
r
i
nterio
r
has a
filter out im
p
H
igh Voltage
S
h
-voltage sw
i
e
m compone
n
e
rvice valve
v
ice valve is
d
le, sales sta
ff
n
sion valve:
p
asses throu
g
c
ed to the ev
a
cess.
filter and de
p
urities in the
S
witchgea
r
i
tch is to pr
e
n
ts, high-pre
s
mainly use
d
ff
can vacuu
m
g
h the ther
m
a
poration pr
e
siccant, the
d
refrigerant.
e
vent excessi
v
s
sure of the
h
d
for filling
r
m
infusion re
fr
9
m
al expansio
n
e
ssure, part
o
d
esiccant abs
o
v
e pressure
i
h
igh-voltage
s
r
efrigerant, a
f
fr
igerant fro
m
n
valve, the
p
o
f the refrige
r
o
rbs moistur
e
i
n the syste
m
s
witch is 2.8
M
f
ter removin
g
m
here.
p
ressure fro
m
r
ant will eva
p
e
fro
m
the re
f
m
, thus affect
i
M
Pa.
g
the nuts, i
t
m
the conde
n
p
orate into
g
f
rigerant, the
i
ng the life
o
t
contains a
v
n
sing
g
as in
filte
r
o
f the
v
alve


8. F
a
It f
o
effi
c
9.
M
T
h
a
n
o
rced air thr
o
c
iency of the
M
otor
h
e role of th
e
o
ugh the duc
t
heat exchan
g
e
axial fan m
o
t
, and then f
l
g
er.
o
tor is driven
Se
r
nuts
10
l
ows through
axial fan bl
a
r
vice valve
a heat exch
a
a
des rotate.
a
nger to imp
r
r
ove heat tr
a
a
nsfer