Panasonic CU-5E36QBU-5, Руководство по обслуживанию

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
The first 30 minutes of cooling operation, (A) will be applied.
13.12 IPM (power transistor) Protection Control

Overheating Prevention Control
o
If IPM temperature rises to 176°F (80°C), outdoor fan speed will be increased.
o
When the IPM temperature rises to 203°F (95°C), compressor operation will stop immediately.
o
Compressor operation restarts when temperature decreases to 194°F (90°C).
o
If IPM temperature detected less than -22°F (-30°C), IPM is judged as open circuit (“F96” is indicated).

DC peak current control
o
When IPMDC current exceeds set value of 30.0 ± 3.0 A, the compressor will stop.
o
If the DC peak current detected within 30 seconds after operation starts, compressor will restart after
1 minute.
o
If the DC peak current detected 30 seconds or more after operation starts, compressor will restart after
2 minutes.
o
Within 30 seconds after compressor restarts, if the DC peak current is exceeded set value continuously for
7 times, all indoor and outdoor relays will be cut off (“F99” is indicated).

Error reset can be done by power supply reset.
13.13 Compressor Protection Control (Gas leak detection control 1)

Control start conditions
o
For 5 minutes, the compressor continuously operates and total current is low.
o
During Cooling or Soft Dry operation:
Indoor intake temperature — indoor piping temperature is below 39.2°F (4°C).
o
During Heating operation:
Indoor pipe temperature — indoor intake temperature is below 37.4°F (3°C).
o
Not during deice control.
o
Compressor ON with maximum frequency.

Control content
o
Compressor stops (and restart after 3 minutes)
o
If the conditions above happen 4 times within 60 minutes, the unit will stop operation (“F91” is indicated).
13.14 Compressor Protection Control (Gas leak detection control 2)

This control detect gas leakage condition to prevent compressor damage.

Control start condition
o
All connected indoor units capability supply ON.
o
Compressor ON with maximum frequency.
o
Not during annual cooling.
o
Compressor discharge temperature high.

Control content
o
Compressor OFF during this control (“F91” is memorized in EEPROM)
o
If the above conditions happen 2 times within 60 minutes, indoor units’ Timer LED will blinks (“F91” is
indicated at all indoor units)