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13. Protection Control
13.1 Protection Control For All Operations
13.1.1 Time Delay Safety Control
The compressor will not start for three minutes after stop of operation.
o
This control is not applicable if the power supply is cut off and on again or after 4-way valve deices condition.
o
13.1.2 Total Running Current Control
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 five seconds, the frequency instructed will be increased.
3
However, if total outdoor unit running current exceeds Y value, compressor will be stopped immediately for
three minutes.
Operation Mode
Cooling / Soft Dry (A)
Cooling / Soft Dry (B)
Cooling / Soft Dry (C)
Heating
4
The first 30 minutes of cooling operation, (A) will be applied.
13.1.3 IPM (Power transistor) Prevention Control
Overheating Prevention Control
When the IPM temperature rises to 120°C (RE18QK) and 110°C (RE24QK), compressor operation will stop
o
immediately.
Compressor operation restarts after three minutes the temperature decreases to 110°C (RE18QK) and 95°C
o
(RE24QK).
If this condition repeats continuously 4 times within 20 minutes, timer LED will be blinking ("F96" is indicated).
o
DC Peak Current Control
When electric current to IPM exceeds set value of 30.0 ± 5.0 A, the compressor will stop operate. Then,
o
operation will restart after three minutes.
If the set value is exceeded again more than 30 seconds after the compressor starts, the operation will
o
restart after one minute.
If the set value is exceeded again within 30 seconds after the compressor starts, the operation will restart
o
after one minute. If this condition repeats continuously for seven times, all indoor and outdoor relays will be
cut off, timer LED will be blinking ("F99" is indicated).
X (A)
11.73
8.82
8.82
9.99
RE18QK
RE18QKE
Y (A)
14.67
41
RE24QKE
X (A)
Y (A)
14.52
12.31
19.04
12.31
11.44
RE24QK
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