Before You Call For Service…

Troubleshooting Tips

Save time and money! Review the charts on the following pages first and you may not need to call for service.

Problem	Possible Cause	What To Do
Not enough or no hot water.	Water Shutoff valve is not fully	● Check shutoff valve and open fully.
	opened.

	Hot water faucet is not fully opened.	● Open how water faucet completely.
		(The main burner goes off when
		incoming water volume is
		inadequate.)

	Water piping is frozen.	● Allow piping to thaw.

	No electricity or water supply is cut	● Check that proper power is being
	off.	supplied and/or water supply is
		adequate.

	Unit is not "ON".	● Turn the unit "ON" by the button
		on the remote control.

	The temperature may be set too low.	● Increase the temperature setting.

	Mixing Valve Malfunctions	● Check and replace if necessary.
	(if applicable)

	Error code displayed on remote	● See instructions for Error Code and
	controller.	if required, contact a dealer for
		service.

	Not enough water demand.	● Increase water flow.

	Water inlet filter clogged.	● Clean water inlet filter.

	Fixture aerator is clogged.	● Clean aerator.

	Scale build up in heat exchanger.	● Check for error code. If required,
		contact a dealer for service.

	Hot and cold water lines reversed.	● Reverse water connections.
Water not hot enough.	The temperature may be set too low.	● Check and open the gas valve fully.

	The gas valve is not fully opened.	● Call your gas company to verify
		the gas meter and gas piping size.

	Gas supply pressure is low.	● Call dealer for service.

	Bleed over in one of the hot water	● Decrease the temperature setting.
	fixtures.

Water too hot.	Temperature is set too high.	● Check shutoff valve and open fully.

	Water shutoff valve is not fully	● Allow more water to flow.
	opened.

	Small amount of water has been	● Normal operation. There is no need
	heated.	to call for service.

Fan continues to rotate after hot water	This function is to supply hot water	● Normal operation. There is no
faucet is closed.	when the hot water faucet is reopened.	need to call for service.

CAUTION: Make certain power to water heater is “OFF” before removing protective cover FOR ANY REASON.

CAUTION: Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper and dangerous operation. VERIFY PROPER OPERATION AFTER SERVICING.

CAUTION: For your safety DO NOT attempt repair of electrical wiring, gas piping, remote control, burners, vent connectors or other safety devices. Refer repairs to qualified service personnel.