3.13 Maintenance and Repair
To ensure good operation in the unit, it should work
with the local dealer tor regularly check the unit and
on-site wiring.
Power off water module and outdoor unit before
maintenance and repair.
● Check the following items once every one:
1. Water tank electric heating
Recommend cleaning water scale in electrical
heating rod to prolong service life, particularly
when tap water is hard. Drain water from water
tank and take electric heating rod and soak it
into a bucket of solution mixed with descaling
solution for 24 hours.
2.
Temperature pressure valve
Check temperature pressure valve works
normally. Move ball wrench to the left, and open
temperature pressure valve to ensure water
flows through effluent pipe.
3. Electrical box in water module
Thoroughly check electrical box, and seek for
obvious negligence, e.g. loose connection or
wrong wiring.
Check AC contactor works normally by using
multimeter and all terminal blocks in AC
contactor do not contact with other parts .
3.14 Troubleshooting
● Comprehensive guide
Observe and thoroughly check electric box
before solution and seek obvious negligence,
e.g. loose wiring or wrong wiring.
Carefully read this section before contact local
dealer, which can save your money and time.
Find out the opening of safety device when
safety device is opened and unit stops. Safety
device can not be beyond the setting value at
factory. If reasons are not found, contact local
dealer.
● Comprehensive symptom
No. Symptom
Possible
C
ause
Solution
1
No water
flows
from hot
faucet.
Main water
source is
closed.
Check stop valve of all water
circulation are opened.
2
Water
flowing
from hot
faucet is
cold.
Water
module
does not
work.
Refer to the manual. Check
water module. If problem
continues, contact local dealer.
3
Water
flows
interrupti
vely .
Temperature
protection
device fails
Power off water module. If no
water flows from outlet pipe, it
still fails, contact local dealer.
4
Water
continuo
usly
flows out.
pressure
valve fails
Check temperature pressure
valve.
5
No water
flows out.
Water inlet
valve fails.
Open water inlet valve.
3.15 Technical S pecification
Running temperature scope at outdoor side:
-20-43ºC
Current
(A)
Max. working
Pressure of
Wa
ter T
ank (MPa)
Max. wor
king
P
ressure of
C
oil
(MPa)
(
Water tank specification
Type
DHWT
150ES
/3H1Q
DHWT
150E/
3H1Q
DHWT
200E/
3H1Q
DHW-
300E/
3H1Q
Capacity (L) 150 150 200 300
mm)
V
Power
S
upply
Φ470x
1606
Φ648
x880
Φ648
x1080
Φ648
x1480
220V-240V~ 50Hz-
Water
T
ank
E
lectric
H
eating
Power
(Kw)
13
Water
S
ide
D
esign
Pressure (MPa)
3
0.65
0.85
Opening Pressure
of Safety alve
(MPa)
0.65
Size of
S
afety
alve
J
oint (inch)
0.85
G3/4
(b)
Size of
C
oil I
nlet
and
O
utlet (inch)
Rp3/4
(a)
Weight (kg) 56 65 77 96
Weight
C
ontaining
Water (kg)
206 215 277 396
Max.Water
S
upply
Pressure
0.65
(a) Rp is British sealed cylinder female thread.
(b) G is British non-sealed cylinder thread.
V
Size
G3/4
(b)
HHHH
57
Temperature
Size of
W
ater
Inlet
and Outlet (inch)
To Next Page
Loading...
