aerauliqa QR590E Installation Manual - Page 18

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Fig. 8.l

Fig. 8.m

8.5 Trouble shooting

Fans do not start

1. Check that main supply gets to the unit.

2. Check that all connections are working (all connections in terminal box and fast couplings of intake and exhaust air fans).

Reduced airflow

1. Check setting of fan speed on the CTRL-DSP (controller supplied).

2. Check filters. Change of filters required?

3. Check diffusers. Re-setting or cleaning of grilles and diffusers required?

4. Check fans and heat exchange block. Cleaning required?

5. Check if air intake and exhaust have been clogged.

6. Check ducting system for damage and/or dirt accumulation.

7. Check if Anti-frost icon

is displayed on LCD.

Fan noise/vibrations

1. Clean fan impellers. Cleaning required?

2. Check that the fans are firmly in place within the unit.

Excessive air noise

1. Check setting of fan speed on the CTRL-DSP (controller supplied).

2. Check grilles and diffusers. Re-setting or cleaning of grilles and diffusers required?

Unpleasant smell

1. Check filters. Change of filters required?

2. Check ducting system and grilles and diffusers. Cleaning required?