Panasonic CS-E9GFEW Service Manual

Also see for CS-E12GFEW: Operating instructions Operating instructions Operating instructions Operating instructions Operating instructions

Contents

Panasonic CS-E9GFEW Service Manual Manual pdf 46 page image

469.14. Dew Prevention Controla. PurposeTo prevent dew.b. Control start conditionsWhen indoor units are ceiling floor, duct and mini-cassette.c. Control contentsHz control is carried out according to the dew prevention status transmitted from indoor.Change is once to 10 seconds.* Once the stand-up went into the down domain by Fcmax as for the Fcmax domain, it shifts to relative changes control domain.When the higher rank of relative control has this control and the status signal od 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 dew prevention down status are transmittedsimultaneously.In the case of dew prevention status 0, it is referred to as maxFc.9.15. Protection Control Features9.15.1. Protection Control For All Operations9.15.1.1. Time Delay Safety Control1. The compressor will not start for three minutes after stop of operation.2. This control is not applicable if the power supply is cut off for 20 seconds and on again or after 4-way valve deices condition.9.15.1.2. 30 Seconds Forced Operation1. Once compressor starts operation, it will not stop its operation for 30 seconds.2. However, it can be stopped using remote control or Auto Switch at indoor unit.9.15.1.3. Total Running Current Control1. When the outdoor unit total running current (AC) exceeds X value, the frequency instructed for compressor operation will bedecreased.2. If the running current does not exceed X value for five seconds, the frequency instructed will be increased.3. However, if total outdoor unit running current exceeds Y value, compressor will be stopped immediately for 3 minutes.4. The first 30 minutes of cooling operation, (A) will be applied.Dew preventionstatus (transmitted indoor)Control contentsRelative control domain MAX domain0 (it usually controls) Usually, control Usually, control1 (rise) Relative change control priority On tap up/10 seconds2 (changeless) Changeless Changeless3 (down) -2 Hz/10 seconds -2 Hz/10 secondsModel CU-E9GFE CU-E12GFE CU-E18GFEOperation Mode X (A) Y (A) X (A) Y (A) X (A) Y (A)Cooling/Dry (A) 4.0 16.8 5.4 16.8 8.74 17Cooling/Dry (B) 3.6 16.8 5.0 16.8 7.70 17Heating 5.5 16.8 8.4 16.8 10.71 17