Venmar 1200 cfm Specifikace stáhnout pdf (Strana 37)

Appendix J: Troubleshooting

Table J1: HRV600i, 700i and 1200i Troubleshooting

Symptoms Possible Causes Solutions

Inside air is too dry.

Over ventilation – speed setting too high. Adjust speed setting.

Dehumidistat setting too low.

Set dehumidistat control in a higher position (if

applicable).

Persistent condensation on windows,

walls, ceilings, etc.

Improper adjustment of dehumidistat control.

Adjust dehumidistat control knob to a lower

setting.

Improper ventilation rate. Install a dehumisistat (option).

Window frame is too cold or leaky. Repair window frame.

Unit stops functioning. Electrical supply interrupted. Check the unit circuit breaker.

Air from supply diffusers too cold.

Imbalance of supply and exhaust air.

Check ﬁlters and heat exchangers for blockage.

Check balance of airﬂows.

Outdoor temperature very cold. Install electric duct heater if necessary.

Unit makes annoying noise. Blower wheel out of alignment.

Remove the motor/blower assembly and adjust

blower wheel.

Heat exchanger freezing up.

Imbalance of supply and exhaust air.

Check ﬁlters and heat exchangers for blockage.

Check balance of airﬂows.

Frost control damper not functioning.

Check for operation of both frost control

damper actuators.

Low exhaust airﬂow in winter season.

Heat exchanger ﬂutes are positioned in the

exhaust airstream.

Remove ﬂat plate heat exchanger sections and

re-position the ﬂute side of the heat exchanger

into the supply airstream.

VCES-HRV-IOM-1C – HRV600i, HRV700i, HRV1200i

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Venmar 1200 cfm Specifikace Strana 37