Panasonic CS-E15DB4EW Service Manual page 31

3. Control contents
In the outdoor fan speed no.
i) In protectorate Domain A is referred to as min 660 rpm.
ii) In protectorate Domain B, it is referred to as min 600 rpm.
4. Condition resolutive
It is canceled when it stops satisfying all of the above-mentioned.
8.2.2.3. Anti-Freezing Control
1. When indoor heat exchanger temperature is lower than 7°C continuously for six minutes, compressor will stop operating.
2. Compressor will resume its operation three minutes after the indoor heat exchanger is higher than 13°C.
3. At the same time, indoor fan speed increase +20 rpm compared to its normal operation.
4. If indoor heat exchanger temperature is higher than 13°C for five minutes, the fan speed will return to its normal operation.
8.2.2.4. Anti-Dew Formation Control
a. Purpose
To prevent dew.
b. Control start conditions
When indoor are ceiling floor, duct and mini casette.
c. Control contents
Hz control is carried out according to the spray prevention status transmitted from indoor.
Spray prevention
status(transmitted indoor)
0 (it usually controls
2 (changeless)
* Once the standup went into the down domain by Fcmax as for the Fcmax domain, it shifts to relative change control domain.
When the higher rank of relative control has this control and the status signal of 2-3 has come out.
Relative change control is stopped and follows directions of spray control.
Priority is given to the which is larger when freeze prevention down status and spray prevention down status are transmitted
simultaneously.
In the case of spray status
Relative control domain
1 (rise) Relative change control priority
3 (down) -2 Hz/10 seconds
0, it is referred to as maxFc.
CS-E15DB4EW CU-E15DBE / CS-E18DB4EW CU-E18DBE / CS-E21DB4ES CU-E21DBE
Control contents
Usually, control
Changeless
Change is once to 10 seconds.
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MAX domain
Usually, control
On tap up/10 seconds
Changeless
-2 Hz/10 seconds