Fujitsu UTY-RNRGZ5 - OPERATIONAL GUIDANCE AND ERROR CODES; Operation Tips

4 OPERATION TIPS
4-1 Selectable Modes (for VRF system)
There are restrictions on the selectable modes depending on
thesystemcongurationandoperationstatus.
4-1-1 Heatrecoverysystem
(a) When single indoor unit connected to RB unit
All the modes can be selected.
(b) When a master indoor unit is set in an RB group, only
the mode selected at the master indoor unit (*1) can be
used.(*1:“Fan”cannotbeselectedattheindoorunit
including the master indoor unit.)
(c) When a master indoor unit is not set in the RB Group,
refer to the following table.
Status Selectable Not selectable
Other indoor unit is in cool-
ing operation.
Cool, Dry Auto or Custom Auto,
Heat, Fan
Other indoor unit is in dehu-
midifying operation.
Cool, Dry Auto or Custom Auto,
Heat, Fan
Other indoor unit is in heat-
ing operation.
Heat Auto or Custom Auto,
Cool, Dry, Fan
Other indoor unit is in anti
freeze operation.
Heat Auto or Custom Auto,
Cool, Dry, Fan
4-1-2 Whenindoorunitsisconnectedforcooling
onlyinheatrecoverysystem
(a) Refertothefollowingtable:
Status Selectable Not se-
lectable
At any time
Auto or Custom Auto,
Cool, Dry, Fan
Heat
4-1-3 RBpriorityconnectioninheatrecoverysystem
(a) For indoor units or RB groups by RB priority connec-
tion,refertothefollowingtable:
Status Selectable Not selectable
Cooling priority is set by
external input.
Cool, Dry Auto or Custom Auto,
Heat, Fan
Heating priority is set by
external input.
Heat Auto or Custom Auto,
Cool, Dry, Fan
4-1-4 Heatpumpsystem
(a) Refertothefollowingtable:
Status Selectable Not selectable
Other indoor unit is in cool-
ing operation.
Cool, Dry Auto or Custom Auto,
Heat, Fan
Other indoor unit is in dehu-
midifying operation.
Cool, Dry Auto or Custom Auto,
Heat, Fan
Other indoor unit is in heat-
ing operation.
Heat Auto or Custom Auto,
Cool, Dry, Fan
Other indoor unit is in anti
freeze operation.
Heat Auto or Custom Auto,
Cool, Dry, Fan
(b) When a master indoor unit is set in a refrigerant system,
only the mode selected at the master indoor unit (*2)
canbeused.(*2:“Fan”cannotbeselectedattheindoor
unit including the master indoor unit.)
4-1-5 Outdoorunitpriorityconnectioninheatpump
system
(a) Refertothefollowingtable:
Status Selectable Not selectable
Cooling priority is set by
external input.
Cool, Dry Auto or Custom Auto,
Heat, Fan
Heating priority is set by
external input.
Heat Auto or Custom Auto,
Cool, Dry, Fan
4-2 Vericationscreenwhensettingis
complete
Thevericationscreenwhichis
displayed when a setting is com-
plete is displayed for approximately
3 seconds. When this screen is
touched, the display switches to
the next screen.
(Example of screen)
On Timer
Setting changed.
4-3 Settabletemperaturerange
The settable temperature range by operation mode and
indoor unit setting is shown in the table below.
Cool/Dry*
18 to 30 °C (64 to 88 °F) or
20 to 30 °C (68 to 88 °F)
Heat
VRFsystem:10to30°C(48to88°F)
Othersystem:16to30°C(60to88°F)
Custom Auto
Same as the above range, but there are tempera-
tures that cannot be set due to the deadband.
Auto*
18 to 30 °C (64 to 88 °F) or
20 to 30 °C (68 to 88 °F)
NOTE
*Thelowerlimitofthesettingtemperatureisdi󰀨erent
depending on the place of use.
En-24