Fujitsu Airstage UTP-RU01AH, Service Manual

Page: 69 / 246

03-06
3-2-4 Custom Auto Heating / Cooling Operation
Operation flow chart
START
Room temp.
COOLING OPERATION HEATING OPERATION
YES
YES
NO
NO
NO
NO
YES
YES
CUSTOM AUTO Operation
*Dead Band(DB) means between T set.C and T set.H, however the setting paramater of Dead Band always has a priolity.
Ex) T set. C: 82°F, T set. H : 78°F DB setting: 6°F => T set. C: 82°F, T set. H: 76°F (DB will be kept from Tset.C basis)
Thermostat remains
in OFF state for 6 minutes or
longer?
System stops
or operation command other than
auto changeover operation?
NO
NO
Thermostat remains
in OFF state for 6 minutes or
longer?
System stops
or operation command other than
auto changeover operation?
YES
YES
- Remote controller type: UTY-RNRU
- Remote sensor in use
- Prohibit the central function from the Central controller *Reccomend
[Function available in follwing conmditions]
1/2 of DB + 3.0°F
Room temp. 1/2 of DB - 3.0°F
Room temp. T set.C + 1.0°F
Room temp. T set.H - 1.0°F
NO
YES
YES
NO
YES
NO
T set.C - T set.H 6°F
T set.C: Setting temp. in Cool
T set.H: Setting temp. in Heat
*When the outdoor unit(s) selected the operation mode at once, the selected operation mode will be kept for 12minutes minimum.
DB: Dead Band*