Auto Changeover Operation - Fujitsu AB*30LBAG series Service Instruction

5-4. AUTO CHANGEOVER OPERATION

When the air conditioner is set to the AUTO mode by remote control, operation starts in the optimum
mode from among the HEATING, COOLING and MONITORING modes. During operation, the
optimum mode is automatically swiched in accordance with temperature changes. The temperature
can be set between 18°C and 30°C in 1 degC steps.
When operation starts, only the indoor fan is operated for 1 minute. (Air flow mode: S- Lo)
1
After 1 minute, depends on the room temperature and outdoor unit's operarion mode,
the operation mode is selected in accordance with the table below.
( Table 4 : Operation mode selection table )
Room temperature :TR
TR > Ts +2 degC
=
Ts +2 degC > TR > Ts -2 degC
Ts +2 degC > TR
=
Ts : Setting temperature
2 When COOLING was selected at
When HEATING was selected at
3
When the compressor was stopped for 6 consecutive minutes by the temperature control function
4
after the COOLING or HEATING operation mode was selected at
to MONITORING and the operation mode is selected again.
Operation mode
Cooling
Monitoring
Heating
1 , the same operation as COOLING OPERATION is performed.
, the same operation as HEATING OPERATION is performed.
1
05-04
above, operation is switched
1