TROUBLESHOOTING GUIDELINES

WATER HEATER CONTROL

TROUBLE SHOOTING

Please check guidelines below. For your safety, water heater service should be performed only by a qualified service technician.

Read the GENERAL SAFETY INFORMATION section first.

INTELLI-VENT TROUBLESHOOTING CHART - RESIDENTIAL CONTROL

#

LED STATUS

PROBLEM

SOLUTION

1

A

B

C

Inadequate or no earth ground

1. Ensure the wall outlet is properly grounded.

 

 

 

sensed by the Intelli-Vent™

2. Ensure all ground connections/wires on the

 

 

 

 

control.

 

 

 

 

 

water heater are secure.

2

A

B

C

Power supply to Intelli-Vent™

1. Ensure the wall outlet is properly wired.

 

 

 

control has reversed polarity or a

2. Ensure all internal 120 VAC wiring connections and

 

 

 

 

high resistance to earth ground.

 

 

 

 

 

wiring harness have no reversed wires. 120 VAC

 

 

 

 

 

“hot” wire must connect to the on/off switch.

 

 

 

 

 

3. Ensure the wall outlet is properly grounded.

 

 

 

 

 

4. Ensure all ground connections/wires on the water

 

 

 

 

 

heater are secure.

3

A

B

C

Pressure switch circuit remaining

1. Ensure air pressure switch circuit wiring is correct

 

 

 

closed for more than 5 seconds

and the air pressure switch is not jumpered.

 

 

 

 

after heating cycle begins.

2. Secure power to water heater, check continuity of air

 

 

 

 

Blower does not start.

 

 

 

 

Service Note:

pressure switch contacts with wires disconnected.

 

 

 

 

A If pressure switch contacts show continuity (closed

 

 

 

 

Disconnect power - disconnect one

 

 

 

 

wire from the air pressure switch

circuit) replace the pressure switch.

 

 

 

 

or the vent temperature limit

B If pressure switch contacts are open and all wiring

 

 

 

 

switch. Turn power back on -

 

 

 

 

blower should start.

is correct - turn the power off for 10-20 seconds

 

 

 

 

 

then on again to clear the error code - if the error

 

 

 

 

 

code persists replace the Intelli-Vent™ control.

 

 

 

 

 

 

4

A

B

C

Pressure switch circuit remains open

1. Ensure the blower is running - check for 120 VAC to

 

 

 

longer than 5 seconds after the blower

the blower when the heating cycle begins, check the

 

 

 

 

is energized.

wiring. If the control does not energize the blower -

 

 

 

 

Blower may run continuously in

replace the Intelli-Vent™ control. If the blower fails to

 

 

 

 

start when energized - replace the blower assembly.

 

 

 

 

this condition.

2. Ensure the air pressure switch sensing tube is properly

 

 

 

 

 

 

 

 

 

 

connected - not kinked or damaged.

 

 

 

 

 

3. Check continuity of vent temperature limit switch - replace

 

 

 

 

 

switch if contacts remain open under 160ºF (71°C).

 

 

 

 

Service Note:

4. Ensure the correct size of vent pipe (2”, 3”, 4”) was used

 

 

 

 

per installation manual for vent length. Ensure maximum

 

 

 

 

To learn more about performing Air

number of elbows or equivalent feet of vent pipe has not

 

 

 

 

Pressure Switch tests visit our web

exceeded maximum limits.

 

 

 

 

site www.hotwater.com to download

5. Ensure there are no obstructions in the vent pipe.

 

 

 

 

technical bulletin A-023-06 Air Pressure

 

 

 

 

Switches.

6. Check air pressure switch performance - check pressure

 

 

 

 

 

 

 

 

 

 

with a digital manometer - check continuity of contacts.

 

 

 

 

 

(see service note in left column) If the switch proves

 

 

 

 

 

defective - replace the air pressure switch and or the

 

 

 

 

 

blower assembly as required.

 

 

 

 

 

7. If air pressure switch performance test results prove

 

 

 

 

 

the air pressure switch is working properly and error

 

 

 

 

 

code 4 persists - replace the Intelli-Vent™ control.

 

 

 

 

 

 

 

A

B

C

The Intelli-Vent™ control has detected

1. Check wiring to the hot surface ignitor - replace ignitor

5

 

 

 

 

 

 

an open ignitor circuit.

assembly if wiring is damaged or worn.

 

 

 

 

Service Note:

2. Check ignitor assembly plug and the socket on the

 

 

 

 

The resistance (ohms) of a hot surface

Intelli-Vent™ body for good connection. Replace

 

 

 

 

ignitor will increase over time. If the

ignitor assembly and/or control if necessary.

 

 

 

 

resistance at room temperature is near

3. Check resistance of ignitor at room temperature 77ºF

 

 

 

 

18.8 ohms - consider replacing the ignitor

 

 

 

 

as a preventative measure.

(25°C) at the plug end. Replace ignitor if resistance

 

 

 

 

 

is not within 11.5 and 18.8 ohms at room temperature.

 

 

 

 

 

4. If results from the above tests were good and error

 

 

 

 

 

code 5 persists - replace the Intelli-Vent™ control.

 

 

 

 

 

 

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A.O. Smith ARGSS02708 instruction manual Troubleshooting Guidelines, Trouble Shooting
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ARGSS02708 specifications

The A.O. Smith ARGSS02708 is a standout product in the realm of water heating solutions, designed with a focus on efficiency, durability, and user convenience. This particular model exemplifies the cutting-edge technology that A.O. Smith is known for, making it a preferred choice for both residential and commercial applications.

One of the main features of the ARGSS02708 is its high efficiency. The unit employs advanced insulation techniques, which minimize heat loss and ensure that energy is utilized effectively. With an Energy Factor that meets or exceeds industry standards, this water heater can significantly reduce energy bills, making it an environmentally friendly choice that doesn't compromise on performance.

Another notable characteristic of the A.O. Smith ARGSS02708 is its robust construction. Built with high-quality materials, this water heater is designed to withstand the wear and tear of daily use. The units are manufactured with a coating that helps resist corrosion, which not only prolongs the lifespan of the heater but also ensures that it operates safely and reliably over time.

The ARGSS02708 also incorporates smart technology that enhances user experience. It features an intelligent electronic control panel that allows for easy monitoring and adjusting of temperature settings, ensuring optimal comfort. This user-friendly interface provides real-time feedback, making it straightforward for users to manage their hot water needs efficiently.

Moreover, the model supports faster recovery rates compared to traditional water heaters. With its powerful heating elements, the ARGSS02708 can provide a steady supply of hot water at consistent temperatures, catering to households or businesses with high hot water demands.

Safety is another critical aspect that A.O. Smith prioritizes in the design of the ARGSS02708. The unit is equipped with multiple safety features, including thermal cut-off switches and pressure relief valves, which ensure safe operation under varying conditions.

In summary, the A.O. Smith ARGSS02708 emerges as an excellent option for those seeking a reliable, efficient, and user-friendly water heating solution. Its combination of advanced technology, durable construction, high efficiency, and safety features make it a commendable investment for anyone looking to enhance their water heating experience.
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