Panasonic NR-B30FW1, Service Manual

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2. The setting temperature
The temperature, when it set on 4
°
C.
The OFF/ON temperature value corresponding to each ATC temperature is as shown in the next table.
3. OFF/ON temperature according to PC temperature setting
The OFF/ON temperature corresponding to each PC temperature setting is as shown in the following tables. More-
over TPOFF and TPON that exist in the following table are considered the temperature calculated by the OFF/ON
temperature value at 4
°
C
setting.
*: TPOFF and TPON that exist in the following table are considered the temperature calculated by
the OFF/ON temperature value at 4
°
C
setting.
5.1.3. VC temperature control
The single damper motor is turned on and off detecting the VC temperature driving time.
Operation: The setting temperature “5
° C” to “0 ° C”, 6 levels change
Detection: SCC, ATC sensor
1. When power supply is turned on, VC temperature is displayed on the panel PCB by reading VC setting data of micro-
computer memories. The data is written in memory area of microcomputer, 5 seconds after VC setting change.
2. According to input of SCC temperature variation, the single damper motor is actuated (normal rotation/reversion).
Then the motor is stopped on number of step that set previously.
3. When power supply is turned on, necessarily for getting rid of condition of half opened damper flap, it is closed by
1,850 steps reversion of the single damper motor.
4. After the motor stopped, if there is no variation of input temperature for 60 minutes, the motor is actuated forcibly.
When damper flap is opened, it is closed forcibly (1,850 steps reversion). When it is closed, it is opened forcibly
(1,850 steps normal rotation). After that, according to the condition of input temperature, the single damper motor is
actuated.
5. The damper flap is closed forcibly, during turning on electricity on the heater, during waiting condition after defrost-
ing, during delay of FC fan after defrosting.
6. During compressor stopping, damper flap is closed.
7. The single damper motor wait for 1 second, after its output is stopped.
8. VC temperature adjustment
According to VC temperature setting, the single damper flap is opened and closed.
ATC correction temperature Turning off temperature
(OFF temperature)
Turning on temperature
(ON temperature)
34
°
C or above 8.5
°
C 10.2
°
C
11
°
C to 33
°
C 6.1 +
(8.5 - 6.1)
×
(ATC correction temperature - 10)/
(34-10)
7.7 -
(10.2 - 7.7)
×
(ATC correction temperature-10)/
(34-10)
10
°
C or below 6.1 7.7
ATC correction temperature Turning off temperature
(OFF temperature)
Turning on temperature
(ON temperature)
(7
°
C) setting TPOFF + 3.3
°
C TPON + 3.3
°
C
(6
°
C) setting TFOFF + 3.3
°
C
×
(2 / 3) TPON + 3.3
°
C
×
(2 / 3)
(5
°
C) setting TFOFF + 3.3
°
C
×
(1 / 3) TPON + 3.3
°
C
×
(1 / 3)
(4
°
C) setting TPOFF TPON
(3
°
C) setting TPOFF - 3.5
°
C
×
(1 / 3) TPON - 3.5
°
C
×
(1 / 3)
(2
°
C) setting TPOFF - 3.5
°
C
×
(2 / 3) TPON - 3.5
°
C
×
(2 / 3)
(1
°
C) setting TPOFF - 3.5
°
C TPON - 3.5
°
C