Fujitsu UTP-VX90A User Manual

Cooling operation
An example for COOLING TEMPERATURE CONTROL time chart
When using the cooling mode, set the temperature to a value lower than the target controlling temperature, otherwise
the External refrigeration cycle equipment will not start the cooling operation.
• Indoor fan*
Ts
• Opening of
EEV
100%
0%
• Refrigerant
flow
ON
OFF
ON
OFF
• Temperature
T
R
3Min.
Ts: Corrected Setting temperature
: The threshold temperature of start of refrigerant flow
: The threshold temperature of stop of
Ts + 0.5 C
Ts - 0.5 C
(1) When using the heating mode, set the temperature to a value higher than the current room temperature, otherwise
the indoor unit will not start the heating operation.
(3)
An example for HEATING TEMPERATURE CONTROL time chart
During defrosting, the OPERATION indicator lamp flashes 6 sec. ON and 2 sec. OFF, and repeat. The heating operation
will be temporarily interrupted.
• Indoor fan*
Ts
• Opening of
EEV
100%
0%
• Refrigerant
flow
ON
OFF
ON
OFF
• Temperature
T
R
.
Ts : Corrected Setting temperature
T
R : Target controlling temperature (Air intake temperature or Air discharge temperature)
: Duration of cold air prevention
(2) After the start of heating operation, the fan of indoor unit will not rotate until the heater exchange is warmed up to
blow out warm air.
TR: Target controlling temperature (Air intake temperature or Air discharge temperature)
+ 0.5 C: Air intake ctrl
+ C: Air discharge ctrl
- 0.5 C: Air intake ctrl
- 5.0 C: Air discharge ctrl
Ts
Ts
+ 0.5 C: Air intake ctrl
+ 5.0 C: Air discharge ctrl
- 0.5 C: Air intake ctrl
- 0.5 C: Air discharge ctrl
Ts
Ts
Air intake temp controlling
: The threshold temperature of start of
: The threshold temperature of stop of
Ts + C
Ts - 5.0 C
Air discharge temp controlling
: The threshold temperature of start of
: The threshold temperature of stop of
Ts - 0.5 C
Ts + 0.5 C
Air intake temp controlling
: The threshold temperature of start of
Ts - 0.5 C
Ts + 5.0 C: The threshhold temperature of stop of refrigerant flow
*When the EEV operates with the minimum pulse, and it keeps for 5 minutes.
Air discharge temp controlling
0.5
0.5
refrigerant flow
refrigerant flow
refrigerant flow
refrigerant flow
refrigerant flow
refrigerant flow
Heating operation
3-8-3 FUNDAMENTAL FUNCTIONS
03-27

Fujitsu UTP-VX90A Specifications

General

Brand	Fujitsu
Model	UTP-VX90A
Category	Air Conditioner
Language	English