User Guide

ManualsBrandsBroan ManualsCooling & Air QualityDISCONTINUED-ADVANCED SERIES HIGH EFFICIENCY ENERGY RECOVERY VENTILATOR, 129 CFM AT 0.4 IN. W.G

8. INSTALLER’S TROUBLESHOOTING

• A few diagnosis procedures may require the unit to be in operation while proceeding. Be careful with moving

and/or live parts.

• Risk of electric shocks. Electronic board connections must be checked by qualified personnel only.

WARNING

LED Signal Error Type Action

LED flashes GREEN (double blink). Thermistor error (unit still works). Replace the thermistor kit.

Supplymotordoes

notwork.

Wallcontroldoes

notwork.

Isthepoweroutlet

energized?

Refertoan

electrician.

Yes

• Unplugwallcontrols

• Unplugunit

• Wait1minute

• Plugunitback

• Wait10seconds–Unitperformsbootingsequence

• Oncethebootingsequenceisover(after10sec.),tryoperatingthe

unitusingtheintegratedpushͲbutton.

WhenhittingtheintegratedpushͲbuttonmultipletimes,doestheLEDgo

fromOFFtoAMBERtoGREENandbackto

OFF?

Yes

Arethewallcontrol

wiresproperly

connected?Pay

specialattentionto

theBLACKand

YELLOWwires.

Theproblemisnot

thewallcontrol.

Referto«Unitdoes

notwork».

Restore

connections.

Yes

Useavoltmeter.

Isthere8Ͳ12VDC

betweenBLACKand

YELLOW?

Yes,but

problemnot

solved.

Changethewall

control.

Testthewallcontrol

usinganewwire.

Doesthewall

controlnowwork?

Changethewall

control.

YesChangethewire.

InvertJ4andJ5

motorconnections.

Doesthesupply

motornowwork?

Restoreoriginal

motorconnections

andreplacethe

supplymotor.

Yes

Restoreoriginal

motorconnections.

InverttheJ6andJ7

capacitors

connections.Does

thesupplymotor

nowwork?

Yes

Restoreoriginal

capacitor

connectionsand

replacethesupply

motorcapacitor.

Onlythehigh

speedworks.

Replacethe

electronicboard.

Replacethe

electronicboard.

Tryrotatingthe

supplymotorby

hand.Doesthe

wheelrotateeasily?

Replacethe

supplymotor.

Yes

• Unplugwallcontrols

• Unplugunit

• Wait1minute

• Plugunitback

• Wait10seconds–Unitperformsbootingsequence.

• Oncebootingsequenceisover(after10sec.),try

operatingtheunitusingtheintegratedpushͲbutton.

Whathappens?



PushͲbuttontimer

doesnotwork

(nolight).

Atunit,jumpOL

andOConthe

GREENterminal

connector.Doesthe

unitnowwork?

Replacethe

electronicboard.

Yes

Thewireorcontrol

isdefective.

Bothspeeds

donotwork.