Panasonic CS-Z25UFEAW Service Manual

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16. Protection Control
16.1 Protection Control for All Operations
16.1.1 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 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 Current
1 When the outdoor unit total running current (AC) exceeds X value, the frequency instructed for compressor
operation 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 for
3 minutes.
Model Z25UD3EAW Z35UD3EAW Z50UD3EAW Z60UD3EAW
Operation Mode X (A) Y (A) X (A) Y (A) X (A) Y (A) X (A) Y (A)
Cooling / Soft Dry (A) 4.16
14.66
5.97
14.66
10.68
14.66
12.40
14.66
Cooling / Soft Dry (B) 3.71 5.43 10.14 11.95
Cooling / Soft Dry (C) 3.71 5.43 10.14 11.95
Heating 4.53 4.98 9.32 10.59
4 The first 30 minutes of cooling operation, (A) will be applied.
38.5°C
101°C
37.5°C
102°C
(C)
(A)
(B)
Outdoor air temperature
16.1.3 IPM (Power transistor) Prevention Control
 Overheating Prevention Control
1 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 Control
1 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 will
restart after 1 minute.
3 If the set value exceeded again within 30 seconds after the compressor starts, the operation will restart after
1 minute. If this condition repeats continuously for 7 times, all indoor and outdoor relays will be cut off
(“F99” is indicated).

Panasonic CS-Z25UFEAW Specifications

General

Brand	Panasonic
Model	CS-Z25UFEAW
Category	Air Conditioner
Language	English