White Rodgers 922, 927, 921, 37E73A-918 installation instructions Troubleshooting

Page 9

 

 

 

 

 

 

TROUBLESHOOTING

 

 

 

 

 

 

 

 

 

 

 

 

A

B

C

7

The self diagnostic test

1. Cycle power to the water heater off for 10 seconds

found a problem with the

and then back on.

 

 

 

 

 

 

 

gas valve driver circuit

2. If the above step did not cleat the error, the INTEL-

 

 

 

 

 

LI-VENT™ control must be replaced

 

 

 

 

 

 

A

B

C

8

The self diagnostic test has

1. Cycle the external power off for 10 seconds and

detected a problem with

then back on.

 

 

 

 

 

 

 

the internal microcomputer.

2. If the above step does not clear the error, the

 

 

 

 

 

INTELLI-VENT™ control must be replaced.

 

 

 

 

 

 

A

B

C

9

The self diagnostic test has

1. Cycle the external power off for 10 seconds and

detected a problem with

then back on.

 

 

 

 

 

 

 

the internal circuit

2. If the above step does not clear the error, the

 

 

 

 

 

INTELLI-VENT™ control must be replaced.

 

 

 

 

 

 

A

B

C

10

Flame signal sensed out of

1. Replace the INTELLI-VENT™ control.

proper sequence.

 

 

 

 

 

 

 

 

 

 

 

 

 

A

B

C

11

The high temperature ther-

1. Replace the INTELLI-VENT™ control.

mal cutoff is open

 

 

 

 

 

 

 

 

 

 

 

 

 

A

B

C

12

The diagnostic test has de-

1. Make sure that there are no objects leaning against

tected one of the tempera-

the front of the control.

 

 

 

 

 

 

 

ture adjust buttons stuck

2. Lightly press and release each of the buttons once.

 

 

 

 

closed

3. If the above actions do not clear the error, the

 

 

 

 

 

 

 

 

 

 

control will continue to regulate water temperature

 

 

 

 

 

at the last setting, but you not be able to change

 

 

 

 

 

settings unless you replace the INTELLI-VENT™

 

 

 

 

 

control.

 

 

 

 

 

 

A

B

C

13

The self diagnostic test

1. Check that all wiring is correct and that there are no

has detected that the water

open or shorted circuits.

 

 

 

 

 

 

 

temperature sensor is ei-

2. If no wiring problems are found the INTELLI-

 

 

 

 

ther open or short circuited.

VENT™ control must be replaced by a qualified

 

 

 

 

 

service person.

 

 

 

 

 

 

A

B

C

14

The self diagnostic test

1. Check that all wiring is correct and that there are no

found a problem with the

open or shorted circuits.

 

 

 

 

 

 

 

Flammable Vapor Sensor

2. If no wiring problems are found the flammable

 

 

 

 

 

Vapor Sensor must be replaced.

 

 

 

 

 

 

A

B

C

15

The control detected the

1. If you smell gas, STOP! Follow the instructions,

presence of flammable

“What to do if you smell gas” on page 1 of this

 

 

 

 

 

 

 

vapors near the appliance

instruction sheet. Otherwise call a qualified service

 

 

 

 

and entered lockout.

person for replacement of the control.

 

 

 

 

 

 

 

Page 8 Page 10
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Page 8 Page 10
Contents Precautions ContentsDescription Installation SpecificationInstalling the NEW Control Removing the OLD ControlPressure port and regulator adjust locations Pressure Regulator AdjustmentTemperature Settings Display Approximate Temperature RegulationOperating Instructions Time to CauseVacation Shutdown Shutting OFF the ApplianceWiring Diagram Intelli-VentWiring Diagram Typical InstallationIntelli-Vent Sequence of Operation Sequence of OperationsError Indication Check, Repair, or Replace TroubleshootingTroubleshooting Page

922, 921, 37E73A-918, 927 specifications

The White Rodgers 37E73A series is a highly regarded line of thermostats known for their reliability and user-friendly interface. The specific models, including the 918, 922, 927, and 921, cater to a wide range of residential and commercial heating and cooling applications. These thermostats are designed to provide optimal temperature control while enhancing energy efficiency.

One of the main features of the White Rodgers 37E73A series is its digital display, which provides clear and intuitive access to temperature settings and programming options. The backlit display ensures readability in low-light conditions, making it convenient for users to adjust settings anytime.

The series supports both heating and cooling systems, making it versatile for various HVAC setups. Whether used in a furnace, heat pump, or air conditioning system, these thermostats can adapt to maintain the desired comfort level efficiently.

Another notable characteristic is its programmable capabilities. With the ability to set multiple temperature profiles throughout the day, users can save energy by lowering the temperature when they are away from home or sleeping. This feature not only contributes to reduced energy bills but also supports environmental sustainability by decreasing overall energy consumption.

The 37E73A series incorporates advanced technology designed for ease of installation and compatibility. The wiring system has been simplified, allowing for straightforward integration with existing HVAC systems. This ease of installation is complemented by detailed instructions that guide users through the setup process, ensuring a hassle-free experience.

Energy-saving features are also a key focus of the White Rodgers 37E73A thermostats. Many models include a built-in energy-saving mode that automatically adjusts settings during peak demand hours. This smart technology enhances the system's performance while maximizing efficiency, ultimately leading to cost savings over time.

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Overall, the White Rodgers 37E73A-918, 922, 927, and 921 models are exemplary choices for anyone looking to optimize temperature control in their living or working spaces. With their array of features, reliable technologies, and energy-efficient characteristics, these thermostats stand out in the HVAC market as a practical solution for climate management.
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