Panasonic CS-E18HKEA Service Manual

Also see for CS-E18HKEA: Operating instructions Operating instructions

Contents

Panasonic CS-E18HKEA Service Manual Manual pdf 36 page image

3613.1.4. IPM (Power transistor) Prevention ControlA. Overheating Prevention Control1. When the IPM temperature rises to 110°C, compressor operation will stop immediately.2. Compressor operation restarts after three minutes the temperature decreases to 95°C.B. DC Peak Current Control1. When electric current to IPM exceeds set value of 30.0 ± 5.0 A, the compressor will stop operate. Then, operation will restartafter three minutes.2. If the set value is exceeded again more than 30 seconds after the compressor starts, the operation will restart after twominutes.3. If the set value is exceeded again within 30 seconds after the compressor starts, the operation will restart after one minute. Ifthis condition repeats continuously for seven times, all indoor and outdoor relays will be cut off.13.1.5. Compressor Overheating Prevention ControlInstructed frequency for compressor operation will be regulated by compressor discharge temperature. The changes of frequencyare as below figure.If compressor discharge temperature exceeds 112°C, compressor will be stop, occurs 4 times per 20 minutes, timer LED will beblinking (“F97” is to be confirmed).13.2. Protection Control For Cooling & Soft Dry Operation13.2.1. 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.Compressor frequency will adjust base on Outdoor Air Temperature.