Panasonic CU-E7GKE Service Manual

Also see for CS-E12GKEW: Operating instructions Operating instructions User manual Service manual Operating instructions

Contents

Panasonic CU-E7GKE Service Manual Manual pdf 42 page image

42b. Control contents• Compressor stops (and restart after 3 minutes)• If the conditions above happen 2 times within 20 minutes, the unit will:- Stop operation- Timer LED blinks and “F91” indicated12.2.1.8. Low Frequency Protection Control 1When the compressor operate at frequency lower than 24 Hz continued for 20 minutes, the operation frequency will be changed to23 Hz for 2 minutes.12.2.1.9. Low Frequency Protection Control 2When all the below conditions occur, minimum value (Freq. MIN) for the frequency instructed to compressor will change to 29(E7GK) ~ 35 (E9GK, E12GK, E15GK) Hz for cooling mode operation and 35 (E9GK, E12GK, E15GK) ~ 44 (E7GK) Hz for heatingmode operation.12.2.2. Protection Control For Cooling & Soft Dry Operation12.2.2.1. Outdoor Air Temperature ControlThe compressor operating frequency is regulated in accordance to the outdoor air temperature as shown in the diagram below.This control will begin 1 minute after the compressor starts.12.2.2.2. Cooling Overload Control• Detects the Outdoor pipe temperature and carry out below restriction/limitation (Limit the compressor Operation frequency)• The compressor stop if outdoor pipe temperature exceeds 61°C• If the compressor stops 4 times in 20 minutes, Timer LED blinking (F95: outdoor high pressure rise protection)Temperature, T, for: Cooling/Soft Dry HeatingIndoor intake air (°C) T < 15 or T 30 —Outdoor air (°C) T < 16 or T 38 T < 4 or T 24Indoor heat exchanger (°C) T < 30 T 0