(3) Outdoor fan snow protection control
(a) This control is enabled/disabled by entering data into 7-segment display.
(b) Outdoor fan control switching operation
[Starting conditions]
When following conditions are established for 10 minutes continuously.
(i) Snow protection control setting is valid ([P02]=1) and ambient air temperature < 3°C or external input of outdoor
fan snow protection control ON. ([P07]=5 and CnS1 is shorted)
①
Set the Code No. to “P02”.
②
“0” or “1” is displayed at the data display area.
“0”: Outdoor fan control disabled (Factory setting)
“1”: Outdoor fan control enabled
③
Press SW7 (Data write/delete) for 3 seconds continuously.
④
“0” or “1” blinks every 0.5 second at the data display area.
⑤
Press SW8 (one digit) to toggle between the blinling “0” and “1” display.
⑥
If SW7 is pressed for 3 minutes or longer continuously while “0 “ and “1” is blinking, the blinking stops.
With this operation, the enabled/disabled setting of outdoor fan control is stored in memory of EEPROM,
and henceforth the outdoor fan is controlled according to the contents of memory.
⑦
Contents of the outdoor fan control are retained even if the power is turned off and backed on again.
(c) Contents pf outdoor fan snow protection control
①
If the ambient air temperature drops 3°C or lower when the unit is all stop or error stop, the outdoor fan runs at the
maximum speed (4th speed) once every 10 minutes.
②
The outdoor fan runs for 30 seconds.*
*Operation time outdoor fan is changeable from 10 to 600 seconds by [P03]
③
During this snow protection control, the compressor’s magnetic contactor (52C1) is ON.
(d) Ending conditions of outdoor fan snow protection control
When following conditions are established.
(i) Snow protection control setting is invalid ([P02]=0) or ambient air temperature > 5°C and external input of outdoor
fan snow protection control OFF (opened).
(ii) Compressor ON
(iii) During all stop by anomaly
Valid
Invalid
Ambient air temperature (°C )
<Ambient air temperature condition at snow protection control>
(4) External output
This function is used in order to operate the external option devices in conjunction with relay outputs of the
respective operation information from outdoor unit.
[External output function]
External output function of CnZ1 can be switched by changing of [P06] on 7-segment display as mentioned below.
(c) Ending condition
• When the starting conditions are not established
dB(A) dB(A) dB(A) dB(A) dB(A) dB(A)
FDC121KXZEN1-W
68 71 67 65 63 60
FDC140KXZEN1-W
69 73 67 66 64 61
FDC155KXZEN1-W
70 73 69 66 65 63
FDC121KXZES1-W
68 71 67 65 63 60
FDC140KXZES1-W
69 73 67 66 64 61
FDC155KXZES1-W
70 73 69 66 65 63
Model
PWL
Sound power
level for cooling
PWL
Sound power
level for heating
PWL
Silent mode
setting 0
PWL
Silent mode
setting 1
PWL
Silent mode
setting 2
PWL
Silent mode
setting 3
(5) Energy saving mode control
This control is effective, when [P04] of 7-segment display is set 000, 040, 060, 080 (except OFF)
(a) Control contents
(i) Compressor upper limit speed is changed according to the setting ratio.
(ii) Compressor upper limit speed is obtained by multiplying the rating speed (at cooling/heating) with the setting ratio
as follows.
OFF: Normal (Factory setting)
80%: 80% of rating compressor upper limit speed
60%: 60% of rating compressor upper limit speed
40%: 40% of rating compressor upper limit speed
0%: 0% of rating compressor upper limit speed (stop)
(Note) Compressor upper limit speed (rps) on energy saving mode is shown in following table
P04
Compressor upper limit speed (rps)
FDC121KXZEN/S1-W FDC140KXZEN/S1-W FDC155KXZEN/S1-W
Cooling Heating Cooling Heating Cooling Heating
080 57 65 74 76 78 76
060 42 49 56 57 58 57
040 29 33 37 38 40 38
000 0 0 0 0 0 0
(iii) Except 0% of energy saving ratio, the following controls take precedence over this control.
• 4-way valve switching safeguard
• Defrost operation
• Oil return control
• Pump down operation control at removal of the unit
• Pump down control at start/stop
(6) Forced cooling/heating operation
(a) With this control, SW3-7 on the outdoor PCB is turned ON and CnS1 (equipped with short-circuit pin)
is shorted or opened so as to forcibly determined whether the indoor unit is operated for cooling or
heating. (It is valid at [P07]=2)
0: Operation output
• When the outdoor unit operation mode is “Operation”, the external output relay is turned ON.
(Note) The “Operation” includes not only compressor ON mode but also fan mode and thermostat OFF mode under the condition of remote
control ON. But the anomalous stop is excluded.
1: Error output
•
•
It is turned ON at anomalous stop, and turned OFF when “CHECK” and “RESET” buttons on remote control
are pressed simultaneously after recovering from the anomaly. Even if “CHECK” and “RESET” buttons are
pressed before recovering from the anomaly, it is not turned OFF, but when recovering from the anomaly later,
When [P82]=1, it is turned ON even when an abnormal signal is received from the connected indoor unit.
it is automatically turned OFF.
2: Compressor ON output
• It is turned ON when the compressor is ON.
3: Fan ON output
• It is turned ON when the outdoor fan speed command > 0.
4: Oil return output
• It is turned ON when the oil return is in progress.
5: Sprinkler output
• It is turned ON when HP > 3.3MPa during cooling operation.
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