Rheem RS80-42BP, RS47-21BP Before You Call For Service…, Problem Possible Causes What To Do

Before You Call For Service…

Troubleshooting Tips

Save time and money! Review the chart on this page first and you may not need to call for service.

Problem	Possible Causes		What To Do
Not enough Hot Water	Solar circuit breaker tripped		Reset/replace as necessary
		or fuse blown
	Safety Thermostat tripped		Reset/replace as necessary.
	or malfunctioned
	Faulty Backup Heating		Replace Backup Heating Element
	Element
	Hot water leak in household		Locate and repair leak
	system
	Blockage in water line		Locate and correct blockages
	Pipes not properly connected		Correct pipe connections according to installation
	during installation		instructions
	Tank blocked with sediment		Flush tank to remove sediment
	Closed loop charge low		Recharge closed loop
	Leak in closed loop		Locate and repair as necessary, recharge closed loop
	Air bubbles in closed loop		Recharge closed loop
	Ruptured tank jacket		Replace tank
	Tank not level		Level tank
	Collectors not level		Level collectors
	Collectors shaded during		Clear obstruction to sunlight on collectors
	daylight hours
	Tempering Valve malfunction		Repair/replace as necessary
Not enough Hot Water	System circuit breaker tripped		Repair/replace as necessary
in the Morning or	OFF or malfunctioned
Following a Cloudy Day
	Faulty Backup Heating Element		Replace as necessary.
Too much Cold Water	No T/P Valve installed		Install T/P
Coming from Drain	Too much pressure through		Repair/replace as necessary.
Line	T/P Valve

Pressure build up caused by Thermal Expansion in a closed plumbing system.

Contact water supplier or contractor on how to correct this. (Do not plug relief valve opening.)

Hot Water coming	Faulty Thermostat	Repair/ replace as necessary
from drain Line	Malfunctioning T/P valve	Press and release T/P valve handle to reseat valve or
		Repair replace as necessary
	System oversized for customer	Cover the solar collector / contact Dealer.

!CAUTION: For your safety DO NOT attempt repair of electrical wiring, thermostats, heating elements or other safety devices. Refer repairs to qualified service personnel.

34