Haier AU042FPERA Service Manual page 40

Pd(MPa)
1.0
1.5
2.2
3.2
When startup the fan motor speed refer to the following:
• Ta≥35°C: highest speed
• 25°C≤Ta<35°C: 6 speed
• 15°C≤Ta<25°C: 3 speed
• Ta<15°C: OFF
3.2 In heating mode
Pd(MPa)
3.8
3.5
3.0
2.4
All the heating start, after the 4-way valve reversing (including defrosting, oil return and 4-way valve is electrified)
the fan motor speed refer to the following:
• Ta≤15°C: highest speed
• 15°C<Ta≤20°C: 3 speed
• Ta>20°C: 1 speed
《A area》Pd<1.0 MPa, drop step by step
at the lowest fan speed (fan speed No.1 ) running 1 min , OFF
《B area》1.0MPa≤Pd<1.5 MPa
Reduce the speed per 1 class /20s until to the lowest
《C area》1.5MPa≤Pd<2.2 MPa
Keep the current fan speed
《D area》2.2MPa≤Pd<3.2MPa
Increase the speed per 1 class/20s
《E area》Pd≥3.2 MPa
Reach the highest speed from the D area speed immediately
《A area》Pd>3.8MPa, OFF immediately
《B area》3.5MPa<Pd≤3.8 MPa
Reduce the speed per 1 class /20s until to the lowest
《C area》3.0MPa<Pd ≤ 3.5MPa
Keep the current fan speed
《D area》2.4MPa<Pd ≤ 3.0MPa
Increase the speed per 1 class/20s
《E area》Pd≤2.4 MPa
Reach the highest speed from the D area speed immediately
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