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7-7. External electrical heater control

The external electrical heater is operated as below.

When the room

temperature rises

When the room

temperature drops

Ts: Setting temperature

Heater : Off

Heater : On

Heater : Off

Ts -10°C

Ts -1°C

Ts -3°C

Ts -12°C

NOTES:

• When the compressor stop, external electric heater is off.

• It operates only in heating mode and when the indoor fan operates. (However, S-LOW is exclud-

ed.)

7-8. Electronic expansion valve control

The most proper opening of the electronic expansion valve is calculated and controlled under the

present operating condition based on the table below.

• Models: AOYG18KBTB, AOYG22KBTB, and AOYG24KBTB

Operation mode Pulse range

Cooling/dry mode

Between 52 and 480 pulses

Heating mode

• Models: AOYG30KBTB, AOYG36KBTB, and AOYG45KBTB

Operation mode Pulse range

Cooling/dry mode Between 47 and 480 pulses

Heating mode Between 39 and 480 pulses

NOTE: At the time of supplying the power to the outdoor unit, the initialization of the electronic ex-

pansion valve is operated (528 pulses are input to the closing direction).

7-7. External electrical heater control - (04-33) - 7. Various control

CONTROL AND

FUNCTIONS

CONTROL AND

FUNCTIONS

Fujitsu ARXG22KMLA User Manual

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