American Water Heater 318281-000 Troubleshooting, Problem, Check This, Possible Cause

TROUBLESHOOTING

PROBLEM	CHECK THIS	POSSIBLE CAUSE	CORRECTIVE ACTION
No hot water	Storage water heater	No power to auxiliary back-up	Check high temperature
		heating element	protection and push reset
			button on the heater
			thermostat. (Use caution when
			dealing with electricity.)
	Storage water heater	Thermostat defective	Replace
	thermostat
	Thermostatic mixing valve	Improper adjustment	Check water temperature at
			house faucet and adjust valve
			setting
		Valve defective	Replace. System must not
			be run without thermostatic
			mixing valve due to scald risk.
Not enough hot water	Storage water heater	Undersized for hot water	Replace
		demand load
		Thermostat set too low	Increase set point temperature
		Element failure	Replace element
		Thermostat failure	Replace thermostat
		Element disconnected	Reconnect element and set
			thermostat to 120°F
	Check valve	Heat loss due to defective	Inspect valve and repair or
		check valve in solar pump	replace
		station
	Cold water supply dip tube	Missing or defective	Replace dip tube
	Collectors	Absorber coating degredation	Replace collector
		Collector panel area	Increase collector area
		undersized
		Excessive condensation	Inspect and clean weep holes
			and vents at bottom.
		Glazing dirty	Clean as required
		Leaks	Repair
		Orientation	Check orientation. Face
			collector within 45° of due
			South
		Shaded by tree(s) or other	Remove obstacle and shading
		obstructions	or relocate collectors
		Improper tilt	Check tilt for geographic area.
			Ensure tilt is equal to latitude
			plus 15°
		Improperly plumbed	Compare with system
			schematic and correct.
	Differential Controller	Improper operation (cycling,	Check sensor placement
		late turn on)	and insulation from ambient
			conditions
		Faulty sensor	Sensor line break. Check the
		is shown and control	line and repair or replace
		reads 888.8 instead of
		temperature
		Faulty sensor	Short circuit. Check the line
		is shown and control	for breaks, metal contact,
			water exposure and corrosion.
		reads -88.8 instead of
		temperature

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