Maytag ERV-150, HRV-210, ERV-210, HRV-150 manual Light does not stay on

13.0Troubleshooting

(cont’d)

Problems	Possible causes	You should try this
4. The 20-minute push-button • The switch
or the 20/40/60-minute	may be defective.
push-button timer does
not workOR its indicator
light does not stay on.

OL

OC

	VE0067
	• Unplug the unit. Disconnect the main control
	and the optional(s) control(s) (if need be). Jump
	the OL and OC terminals. Plug the unit. If the
	unit switches to high speed, replace the switch.
5. The defrost cycle	• Ice deposits may be hindering • Remove the ice.
does not work	the damper operation.
(the fresh air duct is

frozen OR the fresh air • The damper rod or the port • Inspect these parts and replace if necessary.

distributed is very cold	damper itself may be broken.
OR the “AIR EXCHANGE”
light flashes).	• The damper actuator	• Plug in the unit and select “MIN” or “MAX”.
	may be defective.	Press the door switch and see if the port damper
		opens. If it doesn’t open, feed 120V directly to
		the damper actuator. If the port damper still does
		not open, replace the damper actuator.
	• The circuit board may	• Unplug the unit. Unplug the defrost sensor wire
	be defective.	(see J4 on electrical diagrams, Section 9.0).
		Plug the unit back in. Select “MIN” and make sure
		the unit is adjusted for low speed operation (turn
		all dehumidistats maximum counterclockwise).
		Wait 3 minutes. The unit should switch to high
		speed and the damper at the fresh air intake
		port should close (defrost mode). If this does
		not happen, then replace the circuit board.
	• The thermistor may	• If the defrost mode works well after having
	be defective.	disconnecting the thermistor wire (above test),
		this means the thermistor is probably defective.
		You should replace it.

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