50
in diagram. When it it exceeds 20m, the power adapter is necessery.
Pay a en on to the power phase sequence; if there is a wrong connec on of the phase sequence, the compressor
will not operate, and the digital screen of the water heater electrical control board will display error code.
Change the phase sequence, and power on again un l the digital screen does not display error and compressor
.
y
ll
a
m
r
o
n
s
t
r
a
t
s
The water
fl
ow switch, water pump, ON/OFF singal and E-heater are only connected to the host unit, which
is not a 220V control signal. So do not directly drive loading.
When the host unit displays an error of E1, E2 or E8, all the water heaters stop opera on. When the main
unit displays an E4 error, the host unit and wired controller display the error; the slave units do not display
an error code, then all the units will not heat water, and will go into backup mode.
When the host unit has other errors (except E1, E2, E8),
, other units will not be
a
ff
ected. When the slave unit displays an error, only the opera on of the error unit stops, other units will not be
a
ff
ected.
Dial code specification
S3-1: Remote ON/OFF functional status (OFF: inactive (default); ON: active).
S3-2: Defrost periodical choice (OFF: default time by program; ON: 28 minutes).
S3-3,4: Auxiliary heater choice (OFF: indicates 0, ON indicates 1, the factory default is 00).
Address dial code
0~9 separately stands for address 0~9 mean
ing setting of units 0 to 9.
Each mod
u
le of water heat p
um
p has
an electric control
functi
on
.
Set the host
u
nit thro
u
gh the address dial
code on electric control board
.
S
ti
p
u
late t
he u
nit with address dial code 0# as the host
u
nit
.
Only a
ft
er se
tti
ng
the host
u
nit, can the
functi
on of direct comm
u
nica
ti
on with wired controller and other f
u
nc
ti
ons be
activated.
MCAC-HTSM-201801 Alliance R410A Direct Heating Type HPWH 50Hz Technical Manual