Panasonic CS-E7HKEW Service Manual

Also see for CS-E12HKEW: Operating instructions Operating instructions

Contents

Panasonic CS-E7HKEW Service Manual Manual pdf 55 page image

5513 Protection Control13.1. Protection Control For All Operations13.1.1. Restart Control (Time Delay Safety Control)• The Compressor will not turn on within 3 minutes from the moment operation stops, although the unit is turned on again bypressing OFF/ON button at remote control within this period.• This control is not applicable if the power supply is cut off and on again.• This phenomenon is to balance the pressure inside the refrigerant cycle.13.1.2. 30 Seconds Forced Operation• Once the air conditioner is turned on, the compressor will not stop within 30 seconds in a normal operation although the intake airtemperature has reached the thermo-off temperature. However, force stop by pressing the OFF/ON button at the remote controlis permitted or the Auto OFF/ON button at indoor unit.• The reason for the compressor to force operation for minimum 30 seconds is to allow the refrigerant oil run in a full cycle andreturn back to the outdoor unit.13.1.3. 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 5 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.13.1.4. IPM (Power transistor) Prevention ControlA. Overheating Prevention Control1. When the IPM temperature rises to 100qC, compressor operation will stop immediately.2. Compressor operation restarts after 3 minutes the temperature decreases to 95qC.B. DC Peak Current Control1. When electric current to IPM exceeds set value of 18.5 A, the compressor will stop operate. Then, operation will restartafter 3 minutes.2. If the set value is exceeded again more than 30 seconds after the compressor starts, the operation will restart after 2minutes.3. If the set value exceeded again within 30 seconds after the compressor starts, the operation will restart after 1 minute. Ifthis condition repeats continuously for 7 times, all indoor and outdoor relays will be cut off.Model E7HK E9HK E12HK E15HKOperation Mode X (A) Y (A) X (A) Y (A) X (A) Y (A) X (A) Y (A)Cooling/Soft Dry (A) 3.95 15.0 4.54 15.0 6.86 15.0 7.52 15.0Cooling/Soft Dry (B) 3.6 15.0 4.12 15.0 6.35 15.0 7.16 15.0Heating 4.37 15.0 5.57 15.0 8.03 15.0 8.55 15.0