Panasonic CS-Z25UD3EAW Service Manual

Also see for CS-MZ20UD3EA: Operating instructions

Panasonic CS-Z25UD3EAW Service Manual Manual pdf 83 page image

8316. Protection Control16.1 Protection Control for All Operations16.1.1 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 onagain by pressing 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.16.1.2 Total Running Current1 When the outdoor unit total running current (AC) exceeds X value, the frequency instructed for compressoroperation will be decreased.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 for3 minutes.Model Z25UD3EAW Z35UD3EAW Z50UD3EAW Z60UD3EAWOperation Mode X (A) Y (A) X (A) Y (A) X (A) Y (A) X (A) Y (A)Cooling / Soft Dry (A) 4.1614.665.9714.6610.6814.6612.4014.66Cooling / Soft Dry (B) 3.71 5.43 10.14 11.95Cooling / Soft Dry (C) 3.71 5.43 10.14 11.95Heating 4.53 4.98 9.32 10.594 The first 30 minutes of cooling operation, (A) will be applied.38.5°C 101°C37.5°C102°C (C)(A)(B)Outdoor air temperature16.1.3 IPM (Power transistor) Prevention Control Overheating Prevention Control1 When the IPM temperature rises to 120°C, compressor operation will stop immediately.2 Compressor operation restarts after 3 minutes the temperature decreases to 110°C.3 If this condition repeats continuously 4 times within 20 minutes (“F96” is indicated). DC Peak Current Control1 When electric current to IPM exceeds set value of 16.0 ± 2.0A (Z25/35UB4) and 30.0 ± 3.0A (Z50/60UB4),the compressor will stop operate. Then, operation will restart after 3 minutes.2 If the set value is exceeded again more than 30 seconds after the compressor starts, the operation willrestart after 1 minute.3 If the set value exceeded again within 30 seconds after the compressor starts, the operation will restart after1 minute. If this condition repeats continuously for 7 times, all indoor and outdoor relays will be cut off(“F99” is indicated).