Service manual

ESIE03–01 Overview of the heating mode functions
Part 2 – Functional Description 2–47
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2
4
5
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3.6 Starting Outdoor Fan Control in Heating Mode
Applicable units RYP71-125L
Purpose The purpose of the starting outdoor fan control is to control the fan speed in function of the indoor and
outdoor unit air temperature.
Method The illustration below shows the fan starting control in heating mode.
P LPS is not detected for 3 min after start-up.
P The starting fan speed lasts 5 min. The fan speed stays at H for the first 5 s if it is switched from
OFF to L.
The fan operating areas 1 ~ 9 are indicated.
Different fan
speeds
The table below explains the meaning of L, H and HH fan speed.
Used input The outdoor fan starting control in heating mode uses the following inputs:
9
4.5
-1
17 24
OFF OFF OFF
H
4
7
98
2
3
1
6
OFF 5-1
5-2H
OFF
HH H L
Outdoor unit air
temperature
Indoor unit air
temperature
Fan operation
71 and 100 125
1 fan Upper fan (MF1) Lower fan (MF2)
OFF OFF OFF OFF
L LLL
H HHH
HH HH HH HH
Input
Connection on
indoor PCB
Connection on
outdoor PCB
Outdoor thermistor — R1T
Suction thermistor R1T —
Outdoor coil thermistor — R2T