94
Alarm
Code
43
Activation of Pressure Ratio Decrease Protection
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The alarm code is ashed on the 7-segment display of the outdoor unit.
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The alarm code is displayed on the wired controller of the indoor unit.
★
If the pressure ratio ε*1) is less than 1.5 for a minute, the compressor stops. The operation automatically
restarts after three minutes. If this occurs again twice in the next 30 minutes, this alarm code is displayed.
*1) Pressure Ratioε= (Pd[MPa] + 0.1)/(Ps[MPa] + 0.1)
Pd: high pressure (discharge pressure) Ps: low pressure (suction pressure)
TROUBLESHOOTING
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