Ionizer Operation Case Study - Panasonic CS-A7CKP Service Manual

3. Ionizer operation status is not memorised after off. After OFF, when operation is "ON" again, air-conditioner operates without
ionizer operation.
However, during Cool mode etc. + ionizer operation, if there is a power failure & then power resume, A/con shall on at that
mode + ionizer operation.
c. Timer during ionizer operation
Refer to case study in next page for detail.
8.11.1. Ionizer Error Detection Control
A. Purpose
To inform user that error occurs at ionizer system so that repairing job can be carried out.
B. Two type of error detection control:
(a) When Ionizer is ON (example case: Ionizer shorted, ionizer over current protection)
• During ionizer ON operation, when feed back voltage = Lo (micon input) is detected, Ion is OFF. If feedback = Lo for 11
hrs 30 min, ION LED blinks continuously.
• To cancel ion LED blinking, press ion button at remocon (or forcible operation sw at a/con unit). If ion button is pressed
again, ion LED blinks again.
• The error can be reset by:
i) Operation ON/OFF button press to operation OFF.
ii) Forcible switch press to operation OFF.
iii) Operation OFF due to Timer OFF reach.
iv) Timer set ON & operation from ON to OFF (only applicable to 12 hrs timer models).
(b) When Ionizer is OFF (example case: ionizer connecting wire loose)
• During air conditioner is at standby or ON operation and ionizer at OFF condition, if ionizer feed back voltage = Hi (micon
input) is detected, Ionizer breakdown detection control is activated and ion LED immediately blinks.
• To cancel Ion LED blinking, press ion button at remocon (or forcible operation sw at a/con unit). If ion button is pressed
again, ion LED blinks again.
• During ionizer at breakdown condition, if ionizer feedback voltage = Lo (become OK), ion LED will stop blinking.

8.11.2. Ionizer Operation case study

Case 1a: Ionizer only operation (12h delay timer ON)
Case 2a: Ionizer only operation (24h real time timer ON)
CS-A7CKP CU-A7CKP5 / CS-A9CKP CU-A9CKP5 / CS-A12CKP CU-A12CKP5
Case 1b: Ionizer only operation (12h delay timer OFF)
Case 2b: Ionizer only operation (24h real time timer OFF)
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