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2-9-4 Heatsink temperature protection
Protective function Detect device
Heat sink
Heatsink temp
temperature
sensor
protection 1
Heat sink
Heatsink temp
temperature
sensor
protection 2
Heat sink
Heatsink temp
temperature
sensor
protection 3
Heatsink
Heatsink temp
temperature
sensor
protection stop
2-9-5 Compressor temperature protection
Protective function Detect device
Compressor
Compressor
temperature
temp.
protection stop
sensor
<TH11>
2-9-6 O.U Heat - Ex.1(2) Gas Temp. abnormal stop
Protective function Detect device
O.U Heat - Ex.
Heat-Ex 1(2)
1(2) Gas Temp.
Gas temp.
abnormal stop
Sensor
<TH7,TH8>
Display
Start condition
Cool Heat
Above 167
Above 181
Above 189
(Pattern 1
Above 196
EAC4
Pattern 2
Pattern 1 generated 3
times within 60 minutes
Display
Start condition
Cool Heat
Pattern 1
P4
Compressor temperature
above 239
EA31
Pattern 2
Pattern 1 generated 2
times within 40 minutes
Display
Start condition
Cool Heat
EA63
Heat Ex.1(2) gas temp. sensor
TH7 (TH8) for use as condenser
(Heat Ex1)
(4Way valve: Off, EEV: Open) is
detected abnormally-low to High
EA64
pressure saturated temp. for 4
(Heat Ex2)
minutes or more.
Release condition
°F (
°C)
Below 167
75
°F
°C
(83
)
Below 181
Below 167
°F (87°C)
3 minutes elapsed,
°F (91°C))
and below 167
10 minutes elapsed,
and below 167
Release condition
3 minutes have elapsed
and Discharge temp.
°F(115°C)
°F(80°C)
below 176
Error reset (push button
SW) executed after
power reset.
02-21
Operation
°F (75°C)
Cancel Fan speed
step down.
°F (83°C)
Fan speed up 1 step
every 2 minutes.
°F (75°C)
Compressor rotation speed
lessens- 10 rps/ 120sec.
Compressor stops
°F(75°C)
Compressor stop
°F(75°C)
and Error indication.
Operation
Corresponding outdoor
unit stops
Corresponding outdoor
unit stops (Permanent
stop) & Error display
Release condition
Operation
Error reset (push button
System Stop and
SW) executed after
Error indication
power turned on
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Troubleshooting
