9-4 Fan Operation
1. Indoor unit
In Fan Mode the indoor fan is turned on to improve the air circulation in the room. Compressor and
outdoor fan remain OFF all the time.
Note: if the user has selected the Auto Fan Speed setting, the indoor fan speed would be selected by
the unit automatically according to the difference between RT and SPT, as in Cool Mode.
2. Outdoor unit
a.
The speed of the Outdoor fans (OFH-A & OFL-A for system A and OFH-B & OFL-B for system B)
can be
•
High - OFH is ON, OFL is OFF
•
Low - OFH is OFF, OFL is ON
•
OFF - both OFH and OFL are OFF
b.
The OFH and OFL will never be turned ON at the same time.
c.
When the compressor starts working, the speed of the corresponding OFAN is high during the
first 10 min., provided the OFAN is turned ON.
Note:
This rule is not applied at the first compressor starting after an High Pressure Protection (section 9-5).
In this case, the OFAN speed will be determined by the outdoor air thermistor (OAT) as in normal
operation (see below) instead of forced high for 10 minutes. This rule also does not apply when
the outdoor air thermistor is < 21
o
C in cool mode.
d.
When compressor is OFF, the corresponding OFAN is forced OFF except during High Pressure
Protection. The OFAN will run at high speed under High Pressure Protection.
e.
In general cases, when OFAN is turned ON, its speed (High or Low) is determined by the OAT as
below.
Heat Mode
f. The output of OFAN is low (fan stopped) when -2°C<OCT<8°C provided the HP protection operates
and that the OFAN is turned on (see section 9.6).
Cool Mode
24
Содержание GR360M3R5TAA
Страница 15: ...Outdoor Unit GR360M3R5TAA 11...
Страница 24: ...8 2 Electric Wiring Diagrams Outdoor Unit GR360M3R5TAA Indoor Unit MCA90MR5TAA 20 Indoor Unit MCA180MR5TAA...
Страница 51: ...11 ARRANGEMENT OF ELECTRICAL COMPONENTS Terminal Plate Outdoor Unit GR360M3R5TAA 47 Electric Parts...
Страница 52: ...Outdoor Unit GR360M3R5TAA Parts Layout in Unit 48 Electronic Control Board Compressor A Compressor B...
Страница 53: ...Outdoor Unit GR360M3R5TAA 49 Solenoid valves lay out...