• Code: C-0616
• Description: 2nd tandem PF-703 dehumidifier fan /Lt3 (FM27) rotation abnormality. The FM27EM error detection signal is detected twice in succession within a specified period of time after FM27 was turned ON. However, an error detection signal (blowout of ICP) is not detected.
• Causes: • Dehumidifier fan /Lt3 (FM27: HT-505) • PF drive board (PFUDB: PF-703)
• Remedy: 1. Check the connector connection and the wiring between PFUDB and the fan heater, and repair it if any abnormality. 2. Rotate the fan or I/O by hand, and repair it if any abnormality. (Wiring diagram: PF-703: 12-D) 3. Replace the fan heater (FM27). 4. Replace PFUDB.

• Code: C-0621
• Description: PI-PFU (PF-703) dehumidifier fan /Rt1 (FM22) rotation abnormality. The FM22EM error detection signal is detected twice in succession within a specified period of time after FM22 was turned ON. However, an error detection signal (blowout of ICP) is not detected.
• Causes: • Dehumidifier fan /Rt1 (FM22: HT-505) • PF drive board (PFUDB: PF-703)
• Remedy: 1. Check the connector connection and the wiring between PFUDB and the fan heater, and repair it if any abnormality. 2. Rotate the fan or I/O by hand, and repair it if any abnormality. (Wiring diagram: PF-703: 9-B) 3. Replace the fan heater (FM22). 4. Replace PFUDB.

• Code: C-0622
• Description: PI-PFU (PF-703) dehumidifier fan /Lt1 (FM23) rotation abnormality. The FM23EM error detection signal is detected twice in succession within a specified period of time after FM23 was turned ON. However, an error detection signal (blowout of ICP) is not detected.
• Causes: • Dehumidifier fan /Lt1 (FM23: HT-505) • PF drive board (PFUDB: PF-703)
• Remedy: 1. Check the connector connection and the wiring between PFUDB and the fan heater, and repair it if any abnormality. 2. Rotate the fan or I/O by hand, and repair it if any abnormality. (Wiring diagram: PF-703: 10-C) 3. Replace the fan heater (FM23). 4. Replace PFUDB.

• Code: C-0623
• Description: PI-PFU (PF-703) dehumidifier fan /Rt2 (FM24) rotation abnormality. The FM24EM error detection signal is detected twice in succession within a specified period of time after FM24 was turned ON. However, an error detection signal (blowout of ICP) is not detected.
• Causes: • Dehumidifier fan /Rt2 (FM24: HT-505) • PF drive board (PFUDB: PF-703)
• Remedy: 1. Check the connector connection and the wiring between PFUDB and the fan heater, and repair it if any abnormality. 2. Rotate the fan by I/O or hand, and repair it if any abnormality. (Wiring diagram: PF-703: 10-C) 3. Replace the fan heater (FM24). 4. Replace PFUDB.

• Code: C-0624
• Description: PI-PFU (PF-703) dehumidifier fan /Lt2 (FM25) rotation abnormality. The FM25EM error detection signal is detected twice in succession within a specified period of time after FM25 was turned ON. However, an error detection signal (blowout of ICP) is not detected.
• Causes: • Dehumidifier fan /Lt2 (FM25: HT-505) • PF drive board (PFUDB: PF-703)
• Remedy: 1. Check the connector connection and the wiring between PFUDB and the fan heater, and repair it if any abnormality. 2. Rotate the fan by I/O or hand, and repair it if any abnormality. (Wiring diagram: PF-703: 11-C) 3. Replace the fan heater (FM25). 4. Replace PFUDB.

• Code: C-0625
• Description: PI-PFU (PF-703) dehumidifier fan /Rt3 (FM26) rotation abnormality. The FM26EM error detection signal is detected twice in succession within a specified period of time after FM26 was turned ON. However, an error detection signal (blowout of ICP) is not detected.
• Causes: • Dehumidifier fan /Rt3 (FM26: HT-505) • PF drive board (PFUDB: PF-703)
• Remedy: 1. Check the connector connection and the wiring between PFUDB and the fan heater, and repair it if any abnormality. 2. Rotate the fan or I/O by hand, and repair it if any abnormality. (Wiring diagram: PF-703: 11-D) 3. Replace the fan heater (FM26). 4. Replace PFUDB.

• Code: C-0626
• Description: PI-PFU (PF-703) dehumidifier fan /Lt3 (FM27) rotation abnormality. The FM27EM error detection signal is detected twice in succession within a specified period of time after FM27 was turned ON. However, an error detection signal (blowout of ICP) is not detected.
• Causes: • Dehumidifier fan /Lt3 (FM27: HT-505) • PF drive board (PFUDB: PF-703)
• Remedy: 1. Check the connector connection and the wiring between PFUDB and the fan heater, and repair it if any abnormality. 2. Rotate the fan or I/O by hand, and repair it if any abnormality. (Wiring diagram: PF-703: 12-D) 3. Replace the fan heater (FM27). 4. Replace PFUDB.

• Code: C-0631
• Description: 1st tandem PF-703 dehumidification heater /1 (HTR1) high temperature hardware abnormality. After turned ON, the temperature sensor /5 (TEMS/5) detects a heater abnormality signal.
• Causes: • Upper tray fan heater (HT-505) • AC drive board /2 (ACDB/2: HT-505) • PF drive board (PFUDB: PF-703)
• Remedy: 1. Check the connector connection and the wiring between PFUDB and the fan heater, and repair it if any abnormality. 2. Check the connector connection and the wiring between PFUDB and ACDB /2, and repair it if any abnormality. 3. Check the temperature and the installation of the fan heater, and repair it if any abnormality. 4. Replace the fan heater. 5. Replace ACDB/2. 6. Replace PFUDB.