Standard Operation Sequence; Standard Operation Sequence - Hitachi RPC-1.5FSR Technical Catalogue

10.3 Standard Operation Sequence

Each of the following operation sequences is just one example when the unit is combined with DC Inverter
UTOPIA Series Outdoor Unit.
n Cooling Operation
Power to Power to
O.U.: ON O.U. PCB: ON
Power to Power to
I.U. PCB: ON
I.U.: ON
Power to YH2
in I.U.: OFF
Set
Operation Mode
at "COOL"
HIGH
(HIGH 2)
Press
Fan Speed
Fan Speed
Switch
LOW
Press
Temp. Setting
Switch
Power to YH2 for 20 sec.
Press
RUN/STOP
Switch
I.U. Air
Cooling
Operation
< Set Temp.
Press
AUTO-LOUVER
Switch
to 1
TCI-20007-rev.1
Temp. at Top
of Compressor
FS
ON
(Lower than
Activation Level)
MED
Switch
> Set Temp.+1 o C
Outdoor
Intake
Temp.
Temp.
< -5 o C
< Alternately >
< 75 o C
> 75 o C
Auto-Louver
only for indoor unit
0 Reset
with auto-louver
OFF
(Higher than
Activation Level)
Power to YH2 in
I.U.: ON
Switch: Increasing Set Temp.
Switch: Decreasing Set Temp.
Power to Power to
> -5 o C
Y52C CMC :
RY : ON ON
1
CONTROL SYSTEM
I.U.: Indoor Unit
O.U.: Outdoor Unit
Power to CH : ON
Power to CH : OFF
Start of Transmission between
O.U. and I.U.
Start of Transmission between
I.U. and Wired Controller
MD Operation: ON
for unit with drain pump
COOL Indication
HIGH (HIGH 2)
Indication
MEDIUM
Indication
LOW Indication
Indication
of Set Temp.
Run Indicator Lights.
MIF Operation at
Set Fan Speed
Yes
Elapsed Time:
MC Operation: ON
1 sec.
No
MOF Operation: ON
Power to
YH2 : ON
MD Operation: ON
for unit with drain pump
Start of
Auto-Louver
only for Air Panel
or Indoor Unit
with Auto-Louver
Stop of
Auto-Louver
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