Haier AC18CS1ERA - Page 370

368
Super Match
3.2.7 Frequency control when Td is too high
Purpose: make compressor frequency control if the discharging temp. is too high, to lower the discharging
temp. efciently and ensure the system can run normally.
Discharging t
emp.
Td
Reduce FQY rapidly 2HZ/S
Reduce FQY rapidly 1HZ/S
Reduce FQY slowly 1HZ/10S
Remain FQY
Increase FQY slowly 1HZ/10S
118℃
115℃
112℃
109℃
105℃
95℃
Unitary:
Multi:
Discharging temp. TD
Reduce FQY rapidly 2HZ/S
Reduce FQY rapidly 1HZ/S
Reduce FQY slowly 1HZ/10S
Remain FQY
Increase FQY slowly 1HZ/10S
120℃
115℃
110℃
105℃
100℃
95℃
If keeping for 10s, the unit stops, 3 minutes later, the unit can
re-startup. If in 60 minutesthe unit occurs alarm for 3 times, the
failure can be eliminated.
If keeping for 10s, the unit stops, 3 minutes later, the unit can
re-startup. If in 60 minutesthe unit occurs alarm for 3 times, the
failure can be eliminated.