American Water Heater 395T2506NOX Troubleshooting, Complaint Cause Remedy User Qualified Agency

Page 20

TROUBLESHOOTING

 

 

 

 

COMPLAINT

CAUSE

REMEDY

USER

QUALIFIED AGENCY

*Water not hot enough.

Thermostat set too low.

Set thermostat dial to a

 

 

 

higher temperature

 

 

Upper and/or lower

Call qualified agency.

Check continuity and resistance

 

temperature probe out of

 

(Ohms) of upper and lower

 

calibration.

 

temperature probes. Replace

 

 

 

probes if out of specification.

*Insufficient hot water.

Thermostat set too low.

Set thermostat dial to a

 

*See WATER TEMPERATURE

 

higher temperature

 

CONTROL WARNING on page

Upper and/or lower

Call qualified agency.

Check continuity and resistance

12 of Instruction Manual.

temperature probe out of

 

(Ohms) of upper and lower

 

calibration.

 

temperature probes. Replace

 

 

 

probes if out of specification.

 

Main manual gas shutoff

Open main manual gas

 

 

valve partially closed.

shutoff valve to fullest extent.

 

 

Heater too small for demand.

Space usage to give heater

 

 

 

time to restore water

 

 

 

temperature.

 

 

Heater recovery is slower.

Call qualified agency.

Check gas input. If incorrect, check

 

 

 

for inlet air blockage and/or flue

 

 

 

gas exhaust blockage.

Water temperature too hot.

Thermostat set too high.

Set thermostat to a lower

 

 

 

setting.

 

Rumbling.

Sediment accumulation on

Drain a quantity of water

Delime heater.

 

bottom of tank.

through drain valve. If

 

 

 

rumbling persists, call

 

 

 

qualified agency.

 

Ticking or metallic sounds.

Expansion and contraction -

 

 

 

normal.

 

 

Pounding or water hammer.

Air chambers in piping

Drain piping system and

Follow the manufacturer's

 

have become waterlogged.

refill. Heater must be off

instructions for proper charging of

 

Thermal expansion tank

while this is being done.

the thermal expansion tank.

 

damaged, improperly

Check thermal expansion

 

 

charged, or improperly sized.

tank charge pressure when

 

 

 

the water system pressure

 

 

 

is zero.

 

Water leaks.

Drain valve not closed tightly.

If drain valve cannot be

 

 

 

closed tightly, replace.

 

 

If leakage source cannot be

Shut off gas supply to heater

Repair or in case of suspected

 

corrected or identified, call

and close cold water inlet

tank leakage, be certain to confirm

 

qualified agency.

valve to heater.

before replacing heater.

Gas odors.

Possible gas leaks.

Shut off gas supply to heater

 

 

 

and call gas company at

 

 

 

once.

 

18

Servicing should only be performed by a Qualified Service Technician

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Contents Commercial GAS Water Heaters For Models BCLPage Table of Contents Service Warning Service ReminderIntroduction QualificationsTools Required Installation Considerations Gas and Electrical CharacteristicsMultiple Appliance Installations GAS Pressure RequirementsAIR Supply MAKE-UP AIR Direct Communication with Outdoors Contaminated AIRPower Supply AIR RequirementsClosed Water Systems Thermal ExpansionFeatures and Components Blower and Burner Assembly Burner ReplacementPage Spark Igniter, Flame Sensor, Sight Glass Spark Igniter / Flame Sensor / Control TimingSpark Igniter Flame SensorInstallation Venting Category and Materials VentingMinimum Clearances BCL VentingExterior Clearances Venting Tables Technical Venting Data Type B GAS VentOperation and Service Sequence of OperationSequence of Operation Flow Chart YESFor Your Safety Read Before Operating Lighting and Operating LabelTroubleshooting Complaint Cause Remedy User Qualified AgencyControls Overview Control BOX Assembly Pressure Switches All ModelsHigh Limit SWITCH/ Digital Thermostat Display Lights Digital Thermostat LED Indication Action StatusThen Continuity Check of High Limit ECOConditions Ohms Upper Temperature Probe Continuity CheckOhms Resistance Table Lower Temperature Probe Continuity Check Wiring Terminals Description Ignition ControlStart UP/ Flame RECOVERY/ Safety Lockout Start UP Heat ModeFlame FAILURE- Recycle Mode Failure to Light LockoutFault Conditions Troubleshooting Guide for Ignition ControlInternal Control Failure Flame Sensor Current CheckPIN Connections PIN Number Description UGB Blower Speed ControlSW2 SW4 Used for Wiring Diagram American Water Heaters

381T1546NOX, 395T1996NOX, BCL, 381T1206NOX, 395T2506NOX specifications

The American Water Heater Ultra Low NOx Series represents a significant advancement in water heating technology, aiming to meet stringent environmental regulations while delivering reliable hot water for residential applications. Models such as the 104,395T1806NOX, 395T2506NOX, 381T1206NOX, and BCL are designed to prioritize efficiency, performance, and compliance with the latest emission standards.

One of the defining features of the Ultra Low NOx Series is its innovative combustion technology. These water heaters utilize a state-of-the-art gas burner that dramatically reduces nitrogen oxide (NOx) emissions, ensuring compliance with local and federal regulations. This technology not only benefits the environment but also contributes to improved indoor air quality.

Efficiency is a hallmark of the Ultra Low NOx Series, with models designed to maximize energy savings while delivering consistent hot water. They feature a user-friendly, adjustable thermostat, providing homeowners with the ability to set their desired water temperature for optimal comfort. In addition, the insulation on these water heaters is designed to minimize heat loss, ensuring that energy consumption is kept to a minimum.

The Ultra Low NOx models are equipped with an easy-to-use digital control panel that allows homeowners to monitor and adjust settings with ease. This convenience is enhanced by advanced diagnostics, which provide real-time alerts regarding system performance and maintenance needs. This proactive approach helps extend the lifespan of the unit and enhances reliability.

Safety is another crucial characteristic of the Ultra Low NOx Series. Each model is equipped with safety features such as a flame rollout switch and a fully automatic gas shut-off, which ensure that the system operates safely under various conditions.

In terms of installation and maintenance, these models are designed with user-friendly features, making the process simpler for technicians. The compact design allows for flexible installation options, even in tighter spaces.

Overall, the American Water Heater Ultra Low NOx Series, including the 104,395T1806NOX, 395T2506NOX, 381T1206NOX, and BCL models, represents an excellent choice for homeowners seeking an efficient, reliable, and environmentally responsible water heating solution. With a focus on reducing emissions and enhancing performance, these models are built to meet the demands of today's conscientious consumers.
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