2-6 PROTECTIVE FUNCTION
02-10
2-6-1 Protective Function List
Protective Function
Detect Parts
Operating Condition
Operation
Discharge Temp
Protection 1
Discharge Temp
Thermistor
Discharge Temp
Protection 2
Discharge Temp
Thermistor
High Pressure
Protection 4
High Pressure
Sensor
COOL HEAT
<Starting conditions>
3 minutes have elapsed since the start of operation and
(discharge temperature 105°C or suction SH 10°C accumulated time
30 minutes)
<Reset conditions>
Discharge temperature 100°C and suctionSH 7°C
EEV of operating indoor unit gradually opened
<Starting conditions>
Cooling: Discharge temperature 100°C
<Reset conditions>
Discharge temperature 95°C
EEV2 + 30pls/30 secs
Discharge Temp
Protection 4
Discharge Temp
Thermistor
< starting condition>
Discharge temperature 110°C
<Pattern reset condition>
Discharge temperature 1 05°C
Compressor speed -6rps every 30 secs
Speed rise prohibited,
when discharge temperature becomes lower
than 105 , prohibit the rotational speed rise
of the compressor.
Discharge Temp
Protection 5
Discharge Temp
Thermistor
<Starting conditions>
Discharge temperature 95°C and EEV1=3000 pls
<Reset conditions>
2 minutes have elapsed and
(discharge temperature 90°C or EEV1 400pls)
Expansion valve of stopped indoor unit gradually
opened
(upper limit 200pls)
Discharge Temp
Protection Stop
Discharge Temp
Thermistor
<Pattern starting condition>
Discharge temperature fixed value (120°C)
<Pattern reset condition>
3 minutes have elapsed and discharge temperature 85°C
Compressor stopped
<Pattern starting condition>
Pattern generated 2 times within 40 minutes
<Pattern reset condition>
Error reset (push button SW) executed after power turned on again
Compressor stopped
(permanent stop)
Error disp
lay
High Pressure
Protection 3
High Pressure
Sensor
<Starting conditions>
Fixed time has elapsed and high-pressure 3.50MPa
(* Fixed time at start of operation: 10 secs, after operation execution: 20 secs)
<Reset conditions>
Operation (fan speed 1 step increase) complete
Fan speed 1 step increase
High-pressure 3.50MPa High-pressure 3.50MPa
Fan lowest speed
Upper 300 rpm
Lower 0 rpm
DISPLAY
P1
EA11
<Starting conditions>
High-pressure 3.20MPa
Compressor capacity lowered/every 15 secs
HP 3.68 MPa
After 25 seconds have elapsed and,
HP 3.60 MPa
Compressor capacity rise prohibited
<Reset conditions>
High-pressure 3.20MPa
HP 3.8 MPa After 25 seconds have elapsed and ,
HP 3.68 MPa
Compressor capacity lowered every 30 secs
Compressor temperature 1 10°C
and
<Starting conditions>
<Reset conditions>
<Starting conditions> <Reset conditions>
<Starting conditions> <Reset conditions>
High Pressure
Protection 5
High Pressure
Sensor
High Pressure
Sensor
Abnormal High
Pressure protection
Control
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