Mitsubishi Heavy Industries FDT200VSAWPVH Service Manual page 42

(10) Base heater ON/OFF output control (Option)
(i) Base heater ON conditions
When all of following conditions are satisfied, the base heater is turned ON.
・Outdoor air temperature (detected with Tho-A) is 1ºC or lower.
・In the heating mode
・When the compressor is turned ON
(ii) Base heater OFF conditions
When either one of following conditions is satisfied, the base heater is turned OFF.
・Outdoor air temperature (detected with Tho-A) is 3ºC or higher.
・When the compressor stop has been detected for 30 minutes continuously
・In the cooling or dehumidifying mode
Base heater ON
Base heater OFF
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Outdoor air temperature (ºC)
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'21 • PAC-SM-383