Gree FHBQ-D3.5-K User Manual

8
Energy-Recovery Ventilation
System Service Manual
DPOUSPM
2 MAIN LOGIC
2.1 Auto mode
Detect the temperature indoor and outdoor for durative a period of time.
1. The system will operate under by pass mode according to temperature and temperature difference
between room and outdoors is little in transient season.
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By Pass air valve opens, the air discharge fan and air supply fan will operate according to setting fan
speed.
2. The system will operate under heat exchange mode according to temperature and temperature
difference between room and outdoors is large in transient season.
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By Pass air valve closes, the air discharge fan and air supply fan will operate according to setting fan
speed.
3. The system will operate according to the primary mode before the system was off.
2.2 By Pass mode
1. Under By pass mode, air valve is open.
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If the air valve is close, the air discharge fan and air supply fan will stop. When the air valve is open , the
fan will operate according to setting fan speed .
2.3 Heat Exchange mode
1. Under Heat Exchange mode, the air valve is close
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Electrify the air valve motor, judge the position of the air valve. The air discharge fan and air supply fan will
stop if the air valve is open, or they will operate according to setting fan speed .

Gree FHBQ-D3.5-K Specifications

General

Brand	Gree
Model	FHBQ-D3.5-K
Category	Fan
Language	English