Amtrol RTR, WH-7 Classic Series, Top Down, WH-9 Classic Series Troubleshooting, Problem Solution

Page 27

13. TROUBLESHOOTING

 

PROBLEM

 

 

 

SOLUTION

 

 

 

1.

No power to unit

1.

Check circuit breaker, boiler emergency switch and boiler reset switch

 

 

2.

Air in heat exchanger loop

2.

Purge air. Ensure circulator is on Boiler Supply. Check air vents

 

 

3.

Faulty circulator or zone valve

3.

Check circulator and zone valve. Repair or replace if necessary

 

No hot water

4.

Faulty BoilerMate™ thermostat

4.

Check continuity while rotating knob. Circuit should open and close.

 

5.

Faulty Smart Control™

5.

If blank, check power. Check continuity across two orange and two blue leads

 

 

 

 

6.

Boiler inoperable

 

 

while green light is on. If none, open control and replace fuses or replace control.

 

 

6.

Check boiler system. Boiler must operate to generate hot water

 

 

 

 

 

 

 

 

 

1.

Demand exceeds capacity

1.

Check sizing based on household size and boiler output

 

 

2.

Temperature too low

2.

Increase temperature setpoint

 

 

3.

Boiler lacks sufficient output

3.

Wire for priority. If problem persists add storage or increase tank size.

 

Insufficient hot

4. Fouled heat exchanger

4.

Check Boiler Supply/Boiler Return during cold startup. If difference is less than

 

water

 

 

 

 

20°F, clean heat exchanger as outlined below. Install water treatment equipment

 

 

5.

Insufficient heat exchanger flow

 

 

to prevent recurrence.

 

 

 

5.

Check for undersized or faulty circulator, stuck or undersized zone valve. Ensure

 

 

 

 

 

 

all shutoff valves are open. Check for stuck flow check valve. Purge boiler loop

 

 

 

 

 

 

to remove air.

 

 

 

 

 

 

 

 

 

 

1.

Improper plumbing

1.

If Boiler Return is plumbed to the suction-side of a heating circulator, overheat-

 

Water too hot and/

2. Temperature set too high

 

 

ing will occur when the home’s heat is on. Fix plumbing.

 

2.

Reduce temperature setpoint

 

or ER2 message on

3. Temperature sensor not fully inserted

3.

Re-insert thermistor wire

or temperature sensor.

 

Smart Control™

4.

Stuck zone valve

4.

Repair or replace

 

 

5.

Flow check valve stuck open

5.

Clean, repair or replace

 

 

 

 

 

 

 

 

 

 

 

 

 

1.

Air in boiler loop

1.

Purge boiler loop. Check air elimination equipment.

 

Noise from

2. Faulty circulator pump

2.

Repair or replace pump

 

 

BoilerMate®

3. Thermal expansion

3.

Ensure the proper Therm-X-Trol®or equivalent thermal expansion tank is

 

 

4.

Normal noise during initial fill

 

 

installed and adjusted properly

 

 

4.

When first pressurized, a creaking or hissing sound is normal. After pressuriz-

 

 

 

 

 

 

ing, the noise should stop. Always check for leaks.

 

 

 

 

 

 

 

 

 

1.

No thermal expansion tank

1.

Install the proper Therm-X-Trol®or equivalent thermal expansion tank

 

Relief valve

2.

Thermal expansion tank set improperly

2.

Ensure precharge air pressure matches static water pressure

 

3.

City pressure too high

3.

Install a Pressure Reducing Valve (PRV) if city pressure is over 80psi

 

dripping or opening

 

4. System over temperature

4.

Determine cause of over temperature condition and correct problem

 

 

5.

Faulty relief valve

5.

Replace relief valve

 

 

 

 

 

 

 

 

 

ER1 message on

1.

Temperature sensor unplugged

1.

Sensor is unplugged from factory. Plug into Smart Control™ receptacle

 

2.

Temperature sensor cut or faulty

2.

Replace sensor wire (thermistor)

 

Smart Control™

 

3. Water in therm-well

3.

Replace therm-well

 

 

 

 

 

 

 

 

 

 

1.

Poor water quality

1.

Have water tested for contaminants. Typical problems are:

 

Discolored water at

 

 

 

 

Blue/green color = copper discoloration due to low pH

 

 

 

 

 

Black staining/sulfur odor = hydrogen sulfide

 

faucet

 

 

 

 

 

 

 

 

 

White deposits = hard water

 

 

2.

Sediment or suspended particles

 

 

Red staining = high iron levels

 

 

2.

Install sediment filter, purge unit more often to avoid future problems

 

 

 

 

 

 

 

 

Boiler will not

1.

Improper or loose wiring

1.

Check connections against wiring diagrams in this manual

 

2. Boiler high limit has been reached

2.

Boiler will periodically cycle on and off during operation

 

operate when

3. Fuse blown in Smart Control™

3.

Remove 4 screws inside the Smart Control™ wiring box. Replace glass fuse(s)

 

calling for hot

4.

Post Purge (POS) set too high

4.

with those of the same rating

 

water

Post Purge shuts the boiler off prior to reaching domestic setpoint. If set too

 

 

 

 

 

high, the boiler may not

have enough energy to raise the water temperature to

 

 

 

 

 

 

 

 

5.

Problem with boiler system

 

 

setpoint. Reduce POS or

set to 0 if the problem persists

 

 

5.

Have boiler diagnosed for proper operation

 

Circulator or zone

1.

Improper or loose wiring

1.

Check connections against wiring diagrams in this manual

 

valve will not

 

2.

Pre Purge (PRE) set too high

2.

PRE setting delays circulator startup. This is not normally needed in residential

 

operate when

 

3. Fuse blown in Smart Control™

 

 

applications. Reduce PRE or set to 0 if problem persists

 

calling for hot

3.

Remove 4 screws inside the Smart Control™ wiring box. Replace glass fuse(s)

 

water

4.

Faulty circulator pump

4.

with those of the amp same rating

 

 

Repair or replace pump

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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Contents Models Covered Models Codes InstructionsPRE-INSTALLATION Checklist Table of ContentsWH Series Required Components and Accessories ChecklistDomestic Water Piping Boiler Piping WH-7 & 9 Classic Series Piping InstallationPage Domestic Water Piping TOP Down TD-SERIES Piping InstallationPage READY-TO-RUN RTR-SERIES Piping Installation Page WHS Premier Series Piping Installation Page Wiring ALL Smart Control Models Orange Blue Violet WhiteBlack Boilermate Junction BOX Boilermate CirculatorWhite Rodgers 8J48A Priority Wiring Honeywell L8124 B & D Priority WiringPriority Wiring Honeywell L8148B Priority Wiring Honeywell L8148APriority Wiring Typical Multi-Zone Relay Utilizing Post-Purge Feature Water Sensor Plug Water Sensor Installation if EquippedWiring ALL Dial Control Models Except RTR Models Capillary Tube Sensor Bulb Shaft Wire LeadsSeparate Circulator Priority W/CIRCULATORS Schematic Zone Valves SchematicHoneywell L8148E Boiler Control SchematicHoneywell L8148A or Similar W/120V High Limit Wiring ALL READY-TO-RUN RTR ModelsWhite Rodgers 8J48A W/24V GAS Valve Honeywell L8148J W/MILLIVOLT GAS ValveTypical MULTI-ZONE Control Startup Procedure for ALL Models Setting the Smart Control Problem Solution TroubleshootingTD-7 RTR Replacement PartsCleaning the Boilermate Heat Exchanger Coil Explosion or Rupture Hazard General Safety InformationPage West Warwick, Rhode Island

RTR, Top Down, WH-7 Classic Series, WH-9 Classic Series specifications

Amtrol is a well-respected name in the water heater industry, and its Classic Series models, such as the WH-9 and WH-7, are recognized for their quality and performance. These water heaters are designed to meet the hot water needs of residential and commercial applications, offering efficient solutions for those who require a reliable supply of hot water.

The WH-9 Classic Series is a standout model, boasting a 9-gallon capacity, making it ideal for smaller households or specific applications that require a compact solution. This model is designed with a unique top-down heating system, which ensures that water is heated efficiently from the top down, minimizing energy waste. The tank is insulated with high-density foam, reducing standby heat loss and enhancing energy efficiency. This model features a glass-lined steel tank that is resistant to corrosion, coupled with a magnesium anode rod that further extends the tank’s lifespan.

On the other hand, the WH-7 Classic Series offers a slightly smaller 7-gallon capacity, making it a perfect choice for tight spaces or systems where only a limited quantity of hot water is needed. Similar to the WH-9, the WH-7 also utilizes advanced insulation technology to maintain water temperature and reduce energy consumption. The compact design of both models allows for easy installation in various locations within a home or business.

Both the WH-9 and WH-7 feature a user-friendly thermostat for precise temperature control. This allows users to adjust the water temperature to their specific needs, ensuring optimal comfort and safety. The Classic Series is built with high-quality components, including durable heating elements that provide quick recovery times, delivering a steady flow of hot water when needed.

Another notable characteristic of the Amtrol Classic Series is its commitment to sustainability. The company integrates eco-friendly technologies into their products to reduce energy consumption, which is beneficial for both the environment and the consumer’s utility bills.

In conclusion, Amtrol’s WH-9 and WH-7 Classic Series water heaters offer efficient, reliable hot water solutions for varying residential and commercial needs. With their innovative heating technologies, durable construction, and user-friendly features, these models stand out in the competitive water heater market, making them a preferred choice for many homeowners and businesses alike. Whether you opt for the 9-gallon or the 7-gallon capacity, you can be confident in receiving consistent and efficient hot water when you need it most.
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