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167
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3) Compressor protective start III
When the following conditions are satisfi ed, compressor start III is implemented.
a) Less than 6 hours have passed since the power was turned ON, and this is the 1st cumulative compressor start since
the power was turned ON.
The compressor starts synchronous operation 5 seconds after thermostat ON.
The compressor speed is gradually increased by 2 rps/second from the lower limit 30 (40) rps up to the target
speed (the upper limit) 64 rps for 30 seconds after the compressor started.
After the compressor speed reaches the upper limit 64 rps, the compressor speed is decreased by 1 rps/second up
to the lower limit 30 (40) rps and is retained at the lower limit speed until 3 minutes passed after the compressor
started.
After the termination of item
controlling period, if the required speed is higher than the lower limit 30 (40) rps,
the compressor speed is increased again by 6 rps/2 minutes up to the upper limit speed until 11 minutes passed
after compressor started. And then this control is terminated.
Model
Item
FDCVA151, 201
FDCVA251
Lower limit speed
30
40
Upper limit speed
64
64
Units: rps
Cooling
Heating
Compressor speed (rps)
Outdoor unit fan speed
Compressor speed (rps)
Outdoor unit fan speed
less than 46
4th speed (520 rpm)
less than 62
4th speed (520 rpm)
46 to less than 66
5
th speed (570 rpm)
62 to less than 82
5
th speed (570 rpm)
66 to less than 80
6th speed (685 rpm)
82 to less than 92
6th speed (685 rpm)
80 or more
7th speed (740 rpm)
92 or more
7th speed (740 rpm)
Protective start II
Protective start I
Protective start II
First time of
the compressor
cumulative start
2nd or subsequent
time of the
compressor
cumulative start
Less than 6 hours
since the power was
turned ON
6 hours or longer
since the power was
turned ON
Less than 6 hours
since stopping
6 hours or longer
since stopping
In accordance with the following [conditions]
Protective start II
Protective start I
Protective start II
Protective start II
Protective start I
Protective start II
Thermostat ON start
Started by remote
controller after
remote controller
OFF or solved
emergency stop
Operation mode is
changed after
thermostat OFF
Operation mode is
unchanged after
thermostat OFF
[Conditions]
The discharge pipe temperature (Tho-D) and outdoor air temperature (Tho-A) are detected.
• If the discharge pipe temperature (Tho-D) minus the outdoor air temperature (Tho-A) is
>
=
15 degrees, protective start II
is implemented.
• If the discharge pipe temperature (Tho-D) minus the outdoor air temperature (Tho-A) is < 15 degrees, protective start III
is implemented.
(c) Compressor protective control according to operating speed
1) Compressor protection during high speed operation
When the compressor is operated at speeds exceeding 100 rps for 30 minutes, the compressor speed is adjusted to
100 rps at highest for 3 minutes.
2) Compressor protection during low speed operation
When the compressor is operated at speeds below 26 rps for 60 minutes, the compressor speed is adjusted to 30 rps at
lowest for 15 seconds.
(d) Outdoor fan control
(i) Outdoor fan speed is controlled by compressor speed
FDCVA151, 201
Compressor soft start control
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