Rheem PH-25RDVS, P), RUTG-66DV, RMTG-66DV, ECO-180DV warranty Before You Call For Service…

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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 opened..

Check shutoff valve and open fully..

 

 

 

 

Hot water faucet is not fully opened..

Open hot 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 off..

Check that proper power is being

 

 

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 control..

See instructions for Error Code and 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 buildup 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..

Increase the temperature setting..

 

 

 

 

The gas valve is not fully opened..

Check and open the gas valve fully..

 

 

 

 

Gas supply pressure is low..

Call your gas company to verify the

 

 

gas meter and gas piping size..

 

 

 

 

Bleed over in one of the hot water

Call dealer for service..

 

fixtures..

 

 

 

 

Water too hot..

Temperature is set too high..

Decrease the temperature setting..

 

 

 

 

Water shutoff valve is not fully opened..

Check shutoff valve and open fully..

 

 

 

 

Small amount of water has been heated..

Allow more water to flow..

 

 

 

Fan continues to rotate after hot water

This function is to supply hot water

Normal operation.. There is no need

faucet is closed..

when the hot water faucet is reopened..

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.

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Contents Tankless Water Heater For Your Records Install and properly vent the water heater…  & # 0 Natural gas and liquefied petroleum models For Installations in the State of California Location of Water Heater Installing the water heaterInspect Shipment Corrosive AtmospheresVenting Lengths VentingAppliance Vent Adapter Venting Through Closed SpacesDraining the Condensate Horizontal Vent Terminal Location Canadian Installations US InstallationsAdditional Considerations Indoor Water HeaterHorizontal Vent Installation Vertical Vent Termination Location Vertical Vent InstallationThermal Expansion Mounting the Water HeaterWater Supply Connections Cold and hot water connections Lines.Air Drain Valve Shown on Right without Tubing Relief ValveHigh Altitude Leak TestingPressure Testing the Gas Supply System Gas SupplyRemote Control Installation Projections Electrical Connection Power CordPer Foot Downward Pitch Typical Installation of Water Heater Venting RequiredDuring Installation of this water heater… Hot and Cold Pipe Insulation InstallationInsulation Blankets Indoor Water Heater Location Installation Check ListLighting the water heater Water Temperature Setting Safety PrecautionsTime/Temperature Relationship in Scalds Water Temperature Setting… Housekeeping Routine Preventative MaintenanceCondensate Trap Inspection Venting System InspectionBurner Inspection Vacation and Extended Shut-DownFreeze Protection Draining the Water HeaterBefore You Call For Service… Error Code Guide Replacement Parts 135F 57C DIP If YOU Need Service