72
No.
11
Operation explanation and applied data, etc.
(2) Heat sink temp detection control
1) This control protects IGBT overheat preventive protection by the
thermistor (TH temp) on the compressor driving module in
IPDU.
∗ For TH temperature, the higher one of IPDU1 temperature and
IPDU2 temperature is applied.
(3) Over-current protective control
1) The compressor stops when IPDU control P.C. board detects
over-current.
(4) Compressor case thermo control
1) When the compressor case thermostat works, the compressor
stops.
2) When the compressor stops, 1 is counted to the error count,
and the compressor reactivates after 2 minutes and 30 seconds.
After reactivated, the error count is cleared if the operation
continues for 10 minutes or more.
3) The error is determined with error count 4. The error “H04” is
displayed in compressor 1 and “H14” in compressor 2, respectively.
Item
IPDU
control
(Continued)
Remarks
• TH sensor is provided
to IPDU1 and 2 each.
12 High
pressure
prevention
control
(1) High pressure SW control
• The high-pressure SW is usually closed and connected to IPDU.
1) The compressor driver stops when high pressure SW at inverter
compressor operates.
2) When the compressor driver stops, 1 is counted to the error
count, and the compressor driver reactivates after 2 minutes 30
seconds. After reactivated, the error count is cleared if the
operation continues for 10 minutes or more.
3) The error is determined with error count 4. The error “P04” is
displayed.
• The case thermostat is
usually closed and
connected to the
interface P.C. board.
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