Panasonic CS-W7DKE Service Manual

Contents

Panasonic CS-W7DKE Service Manual Manual pdf 27 page image

8.5.11. Overload Protection ControlOutdoor Fan Control• If the temperature of the indoor heat exchanger rises to 51°C, outdoor fan stops. The outdoor fan restarts when the indoorheat exchanger temperature falls to 49°C.Compressor high pressure protection• If the indoor heat exchanger becomes 65°C or more, the compressor will stop and restart automatically.(Time Delay Safety Control - 4 minutes waiting).• This is to reduce the pressure, as to reduce the indoor heat exchanger temp. Nevertheless, is to protect the compressorfrom overload of too high temperature.8.5.12. 4-Way Valve Control• 4-way valve always on during Heating operation. (except deicing operation)• When the unit is switched off by remote control during Heating operation, the 4-way valve stay at Heating position for 5 minutes.• This is to prevent the refrigerant flow process sound for being occur.8.5.13. Outdoor Fan Motor Control• When compressor stops (reaches room temperature), outdoor fan will operate for 30 seconds (forced operation).• This is to release the heat and to obtain the lowest pressure as fast as possible.8.5.14. Hot Start Control• Hot Start Control is to prevent cool air discharge into the room when heating operation start.• When Heating operation starts, Indoor fan will not start until the indoor heat exchanger reaches 30°C as diagram shown.• Hot start is completed when indoor heat exchanger rises to 39°C or operation over 4 minutes.27CS-W7DKE CU-W7DKE / CS-W9DKE CU-W9DKE / CS-W12DKE CU-W12DKE