American Water Heater HPE10280H045DV, HPE10260H045DV manual Troubleshooting Common Service Problems

Troubleshooting Common Service Problems

As a first step in diagnosis and troubleshooting, the unit should be disconnected from power at the breaker/fuse panel for ten seconds, then reconnect power to the unit and determine if the noted error code still appears. The process of waiting for the error code to reappear may take about 8 minutes for the initial power initialization of the unit.

PROBLEM	POSSIBLE CAUSE	TEST/CORRECTIVE
		ACTION
NO HOT WATER:	No power to the water heater.	Check for blown fuse or tripped
		breaker. Restore power to the unit
		then press power button.
	On/Off switch is off.	Press On/Off switch, should be
		illuminated green when energized.
	Unit in Vacation mode.	Press Vacation button to turn off.
	High temperature limit switch open	Reset the high temperature limit
		switch; see “ECO Switch Trouble-
		shooting” (p.25)
	Non-functioning upper	Perform temperature sensor
	temperature sensor	resistance test procedure (p.32),
		replace sensor if defective.
	Inlet or outlet water valves at the	Insure valves are fully open
	water heater closed
INSUFFICIENT HOT WATER	Temperature set point too low	Increase set point temperature;
/ SLOW HOT WATER		see “Adjusting Set Point
RECOVERY:		Temperature” section (p.13)
	Inlet or outlet valves at the water	Insure valves are fully open
	heater are partially closed
	Air filter dirty	Clean or replace air filter
	Hot water usage pattern exceeds	Change to diffrent mode or modify
	the capability of the water heater	usage patterns
	in current mode
	Water connections to unit reversed	Ensure the cold connection is at
		the bottom and the hot connection
		is at the top
	Heat lost through long run of	Insulate exposed piping.
	exposed pipe
	Hot water leak at faucet or piping	Repair hot water leaks
	Non-functioning heating element	Test elements and replace as
		required; see details in the
		“Element Test” section (p.22-23)
	Sediment or scale build up in tank	Drain and flush tank. Water
		conditioning may be necessary to
		minimize build up.
	Water heater may be under-sized	Upgrade to larger capacity water
		heater

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