Panasonic CS-XE9DKE / CU-XE9DKE / CS-XE12DKE / CU-XE12DKE Service Manual ▷ View online
8.2.3.4. Overload Protection Control
The compressor operating frequency is regulated in accordance to indoor heat exchanger temperature as shown in below figures.
8.2.3.5. Preliminary Operation Control
1. Purpose
To improve heating cool start characteristich in which compared to previous model, achived 40°C of discharge air in shorter
time.
time.
2. Detection method
a. OD air temperature sensor
b. ON timer = ON
c.
Control by OD PCB preliminary operation mode ON/OFF jumper wire
3. Preliminary operation control judgement condition
a. Preliminary operation start when all below condition is fulfilled.
i. Air-conditioner is stop
ii. OD air temp
-15°C
iii. ON Timer is set to ON
b. Either one of below condition is true, the preliminary operation is stopped.
i. Air-conditioning is running
ii. OD air temp
-10°C
iii. Compressor operation started
4. Control method
a. Control start
min before the On Timer set time.
b. Compressor motor winding temp is increase by applying small amount of current with uncomplete power phase
c.
Repetition of 1 min ON & 4 min OFF.
time (min)
60
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CS-XE9DKE CU-XE9DKE / CS-XE12DKE CU-XE12DKE
8.2.3.6. Deice Control
A. Deice operation (Normal Deice Operation)
1. Detection methods
Outdoor heat exchanger temperature sensor, timer.
2. Deice operation time chart
Notes
a. During deice operation, the relationship between outdoor pipe temperature and time T5 is such operation will
proceed to next stage.
b. The deice will be performed only after 1 hour from when the operation has started.
c.
When Comp. OFF by the sequence No. 1~7 compressor can restart back without 3 minutes waits (immediate
restart).
restart).
Outdoor heat exchanger temperature
a
15°C
b
18°C
c
25°C
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CS-XE9DKE CU-XE9DKE / CS-XE12DKE CU-XE12DKE
3. Explaination of operation
1) Before the deice is started, compressor frequency is set to the specified value for T1-timer.
2) After deice is started, the 4-way valve, OD Fan and ID fan are OFF.
3) After 4-way valve is OFF for 30 s, compressor frequency is set to the specified value.
4) Before deice is ended, if the outdoor heat exchanger temperature exceeds a°C, set compressor frequency and expansion valve to the
specified values.
5) When outdoor heat exchanger temperature exceeds b°C, or 10 minutes has passed since the 4-way valve is OFF, operation at timer T5
will be started.
6) After the above 5) operation, if the outdoor heat exchanger temperature exceeds C°C, or after timer T5, the deice operation ending signal
will be produced. The comp. Hz is set to the specified value and at the same time outdoor fan motor ON signal is produced.
7) After T6 the deice ending signal is produced, 4-way valve is set to ON, indoor fan is ON, Compressor frequency is FREE, and return to
normal heating operation.
4. Deice operation judgement condition
When any of below a, b, c, d condition is satisfied, deice signal is produced.
a. Continuously, outdoor heat exchanger temperature < 3°C for 120 minutes and outdoor heat exchanger temperature <
-6°C for 3 minutes and outdoor air temperature > -1°C and Comp. is ON.
b. Continuously, outdoor heat exchanger temperature < 3°C for 80 minutes and outdoor heat exchanger temperature < -
7°C for 3 minutes and outdoor air temperature > -1°C and Comp. is ON.
c.
Continuously, outdoor heat exchanger temperature < 3°C for 40 minutes and outdoor heat exchanger temperature < -
9°C and outdoor air temperature > -3°C for 3 minutes and Comp. is ON.
9°C and outdoor air temperature > -3°C for 3 minutes and Comp. is ON.
d. Continuously, outdoor heat exchanger temperature < 3°C for 40 minutes and outdoor heat exchanger temperature < -
11°C for 3 minutes and outdoor air temperature < -3°C and Comp. is ON.
However, the first deice will start only after minimum of 60 minutes in operation.
(2nd deice and onward shall follow above conditions)
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CS-XE9DKE CU-XE9DKE / CS-XE12DKE CU-XE12DKE
8.3. Oxygen Enrich Operation
8.3.1. Purpose
Increase usage range by enable oxygen enrichment only operation.
8.3.2. Oxygen Enrichment Control -1
A. Indoor fan control
1. Air flow volume manual
Air flow volume as set by remote control. Speed same as for Cool mode.
2. Air flow volum auto
Repetition of 8 pattern (a ~ h) as shown below.
Each pattern, 10s
XE9DK
XE12DK
Quiet
Program Air
No. B
820
870
No. A
790
840
No. C
760
810
W
C
30
30
However, if combined operation with other mode, priority is given to fan control of other mode.
Priority: Cool - Dry - Fan - Heat > Ionizer > Oxygen
B. Indoor air direction control
1. Air flow direction manual, auto
→ same as cooling operation.
However when combined operation with other mode, priority is given to air flow direction control of other mode.
Priority Heat - Cool - Dry - Fan > Ionizer > Oxygen
C. Start & Cancel condition of Oxygen enrich operation
1. By remote control ON/OFF button.
a. During Ionizer and Air Conditioner is OFF, if Oxygen button is pressed
→ Oxygen only operation.
b. During Ionizer only operation, if Oxygen button is pressed
→ Ionizer + Oxygen enrich operation.
c.
During Oxygen only operation, If Oxygen button is pressed
→ Oxygen operation stop.
d. During Oxygen only operation, if ON/OFF button is pressed
→ Mode (as remote control setting) operation + Oxygen operation.
e. During Cool, Fan, Heat, Dry, Ionizer operation, if Oxygen button is pressed
→Cool, Fan, Heat, Dry, Ionizer + Oxygen operation, if Oxygen button is pressed.
f.
During Cool, Fan, Heat, Dry, Ionizer + Oxygen operation, if Oxygen button is pressed.
→ Cool, Fan, Heat, Dry, Ionizer operation.
g. During Cool, Fan, Heat, Dry, Ionizer + Oxygen operation, if ON/OFF button is pressed
→ All operation stop.
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CS-XE9DKE CU-XE9DKE / CS-XE12DKE CU-XE12DKE
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