Panasonic S-22KA1E5 - Compressor Discharge Temperature Control; Condenser Temperature Control; Compressor Restart Delay Control; Outdoor Residual Heat Removal Control.217

217
14.5 Compressor Discharge Temperature Control
• This control will operate if compressor discharge temperature is detected hot at alert level.
o If Compressor Discharge Temperature
≥
100°C, liquid bypass valve will open.
o If Compressor Discharge Temp
≥
105°C, compressor frequency will reduce 10% if the compressor
discharge temp still at down zone.
• The compressor frequency will only reduce max 2 times with 3 minutes interval OR to minimum frequency.
• If compressor already reduced to minimum level but temp still at down zone, gas bypass valve will opens.
14.6 Condenser Temperature Control
• During Heating operation only, this control will start if below conditions are fulfilled:
o Total capacity of thermostat ON indoor units maintain for 10 minutes
o None of the indoor units’ heat exchanger > 40°C
• Every interval of 60 sec, compressor frequency will increase 20% if the indoor heat exchanger temperature still in
up zone.
• The compressor frequency will only increase maximum 5 times OR up to maximum frequency
• This control will be ignored if any of the following control activated:
o Deice
o Low Load
o Overload
o Compressor Discharge Temperature Control
o Total Current Protection
o Night Time Low Noise Control
14.7 Compressor Restart Delay Control
• Compressor only can be startup after at least 3 minutes of compressor OFF.
• During this control, compressor cannot restart and gas bypass valve is ON.
14.8 Outdoor Residual Heat Removal Control
• When compressor OFF, outdoor fan operate for 1 minute to remove the remaining heat.
14.9 Compressor Stops Control
• This control ensures compressor is stopped within 30 seconds during normal operation.
• If compressor stop is due to protection control, compressor will stop immediately.
Comp Frequency (Hz)
Time (Sec)
Normal Control
Max 30sec
Comp Stop Signal
• Outdoor fan motor will continue to run at maximum speed for 60 seconds after compressor OFF signal is
received.
• Gas bypass valve will ON for 3 minutes once received compressor OFF signal.
Up
zone
40
o
C45
o
C
Free
zone
Unchanged
zone
Up
zone
40
o
C45
o
C
Free
zone
Unchanged
zone
Free
Zone
Unchanged
zone
90
o
C
105
o
C 110
o
C
Comp
Stop
Down Zone
Comp Frequency Control
Free
Zone
Unchanged
zone
90
o
C
105
o
C 110
o
C
Comp
Stop
Down Zone
Comp Frequency Control
Unchanged
zone
Close
(OFF)
Open
(ON)
80
o
C
100
o
C
Liquid Bypass Valve Control
Unchanged
zone
Close
(OFF)
Open
(ON)
80
o
C
100
o
C
Liquid Bypass Valve Control