Hitachi RPI-0.8FSG1 Service Manual page 91

Thermo Temp. of
11 Remote Control
Switch
Indication on Micro-Computer Input/Output
Micro-Computer
12 Input/Output in
Indoor Unit
Micro-Computer
13 Input/Output in
Outdoor Unit
Indication of Unit Stoppage Cause
14 Cause of Stoppage
Abnormality Occurrence Counter
Abnormality
15
Occurrence Times
Instantaneous Power
16 Failure Occurrence
Times in Indoor Unit
Transmission Error
Occurrence Times
17 between Remote
Control Switch and
Indoor Unit
Abnormality
18 Occurrence Times
on Inverter
Indication of Automatic Louver Condition
19 Louver Sensor
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Heating Thermo-ON Alarm
Cooling Thermo-ON Operation
Dark
H2
52H
Y52C2 Y211
Y212 Y52C1
Dark
Y20B
Y20A
Outdoor Fan
Symbols with a letter Y are relays on PCB
00 Operation OFF, Power OFF
01 Thermo-OFF (NOTE 1)
02 Alarm (NOTE 2)
03 Freeze Protection, Overheating Protection
05 Instantaneous Power Failure at Outdoor Unit, Reset
(NOTE 3)
06 Instantaneous Power Failure at Indoor Unit, Reset (NOTE 4)
07 Stoppage of Cooling Operation due to Low Outdoor Air
Temperature, Stoppage of Heating Operation due to
High Outdoor Air Temperature
Compressor Quantity Changeover, Stoppage (HP > 8)
08
09 Demand of 4-Way Valve Changeover Stoppage (FX Only)
10 Demand, Enforced Stoppage
11 Retry due to Pressure Ratio Decrease
12 Retry due to Low Pressure Increase
13 Retry due to High Pressure Increase
14 Retry due to Abnormal Current of Constant Compressor
(HP > 8)
15 Retry due to Abnormal High Temperature of Discharge
Gas, Excessively Low Suction Pressure
16 Retry due to Decrease of Discharge Gas Superheat
17 Retry due to Inverter Tripping
18 Retry due to Voltage Decrease
19 Expansion Valve Opening Change Protection
20 Operation Mode Changeover of Indoor Unit (NOTE 5)
(NOTE 1) Explanation of Term,
Thermo-ON:
Thermo-OFF: A condition that an indoor unit is not
(NOTE 2) Even if stoppage is caused by "Alarm", "02" is not
always indicated.
(NOTE 3) If transmission between the inverter printed circuit board
and the control printed circuit board is not performed
during 30 seconds, the outdoor unit is stopped.
In this case, stoppage is d1-05 cause and the alarm
code "04" may be indicated.
(NOTE 4) If transmission between the indoor unit and the
outdoor unit is not performed during 3 minutes,
indoor units are stopped.
In this case, stoppage is d1-06 cause and the alarm
code "03" may be indicated.
(NOTE 5) In the FSG and FS3 system "20" will be indicated
at the difference mode between indoor units.
Countable up to 99.
Over 99 times, "99" is always indicated.
(NOTE 1) If a transmitting error continues for 3 minutes, one
is added to the occurrence times.
(NOTE 2) The memorized data can be canceled by the
method indicated in 1.3.1 "Self-checking of PCBs
using Remote Control Switch" in pages 1-103, 104.
TROUBLESHOOTING
SWING ON/OFF TIMER
FAN HIGH
LOUVER
MED
COOL
ADDS RN HR
HEAT LOW
NO FUNCTION
DEFROST
DRY A/C
SERVICE
ABNML
CENTRAL
+
AUTO VENT H.STRG
T. RUN
RUN / STOP
MODE FAN SPEED ON/OFF TIMER
VENTI LOUVER
TIME
A condition that an indoor unit is
requesting compressor to operate.
requesting compressor to operate.
SET TEMP.
UNIT
FILTER
CHECK
TEMP.
RESET
CHECK
1-81