Panasonic CS-E18CKE, Service Manual, Page: 22 / 100

iii. Max Capacity Condition
a) During Cooling operation, if all to the following condition is fulfilled, the indoor fan speed is set to Shi.
1. Indoor intake temperature 24°C.
2. Operation frequency 72 Hz (E18CK), 95 Hz (E21CK) & above.
3. Remote Control setting temperature 16°C.
4. Remote Control setting fan speed Hi.
5. Outdoor temperature 30°C.
6. Operation start within 30 minutes.
* If any of above conditions is not valid, the condition is ended.
b) During Heating operation, if all to the following condition is fulfilled, the indoor fan speed is set to SSHi.
1. Indoor intake temperature is 17°C or above and less than 23°C.
2. Operation frequency 86 Hz (E18CK), 93 Hz (E21CK) & above.
3. Remote Control setting temperature 30°C.
4. Remote Control setting fan speed Hi.
5. Outdoor temperature < 4°C.
6. Operation start 2 hours.
* If any of above conditions is not valid, the condition is ended.
C. Fan Motor Control
i. Motor specification
High voltage PWM Motor
ii. Feedback Control
1. Rotation speed feedback
Immediately after the fan started, rpm is checked and duty is added, and feedback control is performed.
iii. Abnormal Detection
1. Condition *
* Step out signal input
Feedback rotation speed is more than 2550 rpm or below 50 rpm.
However, 10s after fan start, rotation abnormality is not detected.
2. Control * Fan stop
3. Return * Restart after 5s
However, in case the fan is stopped by the above conditions within 25s after fan has started, and happened
continuously for 7 times, restart will not be performed.
→
Indoor fan motor lock abnormal (H19)
iv. Restart Prohibition Control
Prohibit to restart within 5s after fan stop.
(except when power is ON)
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