Mitsubishi Electric PKA-RP1.6GAL Service Technical Manual page 52

Control modes
2-1. Normal control
2. Fan
2-2. Start-up control in HEAT operation at low outside temperature (RP3 only)
2-3. Others
3-1. Normal control
3. Bypass valve control
(RP3 only)
Fan rotation times (rpm) will be controlled according to the outdoor outside
temperature (TH7).
• Control method: Inverter control
• Rotation times: Fan step (N) = 0, 9 and 10
N=10
4
Outside temperature (TH7)
[Requirement] All of following conditions should be satisfied.
a. The first start-up after the power has been reset, or the start-up in HEAT
mode after 30 minutes have passed since the compressor stopped.
b. Outside temperature (TH7) [ 0:
[Control details]
Fan step will be set to 0 (N = 0) for 2 minutes after the start-up of compressor.
Start-up control will turn into the normal control after the 2-minute operation of compressor.
(1) Fan also stops when the compressor is being stopped. (Fan step = 0)
However, fan step will be set to 10 while the compressor is being
stopped due to the abnormal heat sink temperature (Error code = U5).
At that time, the compressor is just waiting for 3 minutes to restart.
(2) In case of RP3, fan is being stopped for 2 minutes after the start-up of
compressor in HEAT mode at low outside tempereture (Fan step = 0)
Start-up control in HEAT operation
[Bypass valve ON/OFF]
ON for 3 minutes after the compressor gets started operating.
Control details
N: Current fan step
N=9
6 [:]
52
Remarks
Step (N)—Rotation
times(rpm)
Step Rotation times(rpm)
(N)
RP1.6, 2 RP2.5, 3 RP4-6
0 0 0 0
1 105 95 125
2 135 115 155
3 165 135 175
4 205 165 200
5 265 200 240
6 340 245 285
7 430 305 360
8 530 450 465
9 680 700 700
10 700 720 720