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TO temp. Heater output
OFF
9˚C
4˚C
ON
(Equivalent to 75W)
Item
21. Cord heater control
(-ND model only)
Operation flow and applicable data, etc.
<Base plate cord heater control>
When TO sensor is defective, turn off normal heater
output. When COOL thermostat is ON, turn off the
heater output.
Description
1. Purpose
Base plate freeze prevention of the
outdoor unit
2. Operation
As shown in the left figure, the base
plate freeze preventive heater is
controlled by temperature of the
outside temp. sensor (TO).