51
3
Trial run
3.1 Check list
Please check the items before operation in the table 3-3.1.
Table 3-3.1: Checking list before operation
No.
Item
1
Whether the unit is installed firmly.
2
Whether the air inlet and outlet of the unit
are
obst
ructed
.
3
Whether the dial codes of each unit has been dialled to the correct posi
ti
on.
4
Whether all the valves in the water side pipeline are under correct status.
Whether there is water system leakage.
Whether the water system is clean.
Whether the
fi
lter is clean.
Whether the water drain
allows a smooth flow of water
.
Whether the heat insul
ati
on o
f t
he water pipe has been complete
d
.
Whether the wate
r fl
ow switch works well.
Whether the unit is correctly earthed.
Whether the power voltage meets the requirements o
f t
he unit.
Whether the leakage protector is work
ing
e
ff
ec
ti
vely.
5
6
7
8
9
10
11
12
13
When use the wired controller to operate the water heater, please check the items during trial running in the
table 3-3.2.
Table 3-3.2: Checking list during trial running
No.
Item
1
Whether all the buttons of wired controller are normal.
2
Whether the input voltage of the unit meet
s
the requirements of the unit.
3
Whether the electronic lock has been unlocked.
4
Whether the water outlet temperature is normal.
5
Whether there is any abnormal vibration and noise during operation.
3.2 Special functions
Enter ‘Debugging replenishing’ method: Press ‘CHECK’ bu on for 3 to 20 seconds within 1 minute a er power on,
then the digital screen will display ‘0’ and
fla
sh with 2Hz frequency, meaning
the function selection state
can be activated.
:
r
e
b
m
u
n
g
n
i
d
n
o
p
s
e
r
r
o
c
h
c
a
e
y
a
l
p
s
i
d
ll
i
w
No
.
5: Drain water mode;
No
.
6: Force cycle pump opera ng;
No
.
8: Force defros ng;
er 5s, the digital
screen
wil
l fl
ash with 1Hz frequency; meaning that the unit has already entered the
debugging replenishing fun o
n.
$OOLDQFHR410A Direct Heating Type HPWH 50Hz Technical Manual MCAC-HTSM-201801
