Toyotomi TAG2-A53EW, Руководство по обслуживанию

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DEFROSTING OPERATION
• Defrosting operation is controlled by the temperature of outdoor heat exchanger sensed by the thermistor and
the timer switch.
• Defrosting operation starts when the both of the following conditions are met at the same time.
a) 50 minutes pass the start of heating operation or after the completion of previous defrosting operation.
b) the temperature of the outdoor heat exchanger stays lower than -1
°
C continuously for 5 minutes.
c) When one indoor unit starts its defrosting operation, the other indoor unit also starts the operation regardless
the conditions being matched that are written above.
• Defrosting operating is called off if either of the following conditions is met.
a) The temperature of outdoor heat exchanger rises to 15
°
C.
b) 8 minutes and 30 seconds has passed since compressor turned ON.
OPERATION DETAILS
Compressor
Outdoor fan
4way valve
ON OFF
OFF
OFF
ON
ON
ON ON
ON
ON
55 sec. 5sec. 5sec. Max 8 min. Min75 sec. 55 sec.
5min.
10sec.
-1˚C
+15˚C
Defrosting starts Defrosting stop
Temperature of
outdoor heat exchanger