What to do if the low gas pressure switch does not show continuity in my State Water Heaters Utra-Force STC-077 Water Heater?
If the low gas pressure switch on your State Water Heaters Water Heater doesn't show continuity, check for the minimum supply gas pressure of 5.0” W.C. for natural gas or 9.0” W.C. for LP gas. If the gas pressures are above these minimums, replace the switch.
What to do if there is no continuity between terminals on pressure switches in my State Water Heaters Utra-Force STC-077?
If continuity is not present between terminals on one or more pressure switches in your State Water Heaters Water Heater: * If the pressure recorded is within the value shown in the table for the switch contacts to remain closed, replace the pressure switch. * If the pressure recorded is not within the value shown in the table for the switch contacts to remain closed, check for and clear any restrictions in the vent and/or air intake piping and check for and restore minimum supply gas pressure.
What to do if 24 VAC is not present between pin 1 on CN3 plug and ground in State Water Heaters Utra-Force STC-077 Water Heater?
If 24 VAC is not present between pin 1 on the CN3 plug and ground on your State Water Heaters Water Heater, first ensure the water temperature in the tank is below 160° F. Then, press the Set/Reset button on the display panel. If the tank water temperature is below 160 and the previous steps were successful, replace the upper temperature/ECO probe.
How to restore power to the control board on State Water Heaters Utra-Force STC-077 Water Heater?
If 120 VAC is not present to the control board of your State Water Heaters Water Heater, check the On/Off switch and turn it on. If the switch is defective, replace it. Also, ensure that power is restored to the water heater.
What to do if 120 VAC is not present to the ignitor from pin 1 and 2 on control board terminal CN5 on State Water Heaters Utra-Force STC-077?
If 120 VAC is not present to the ignitor from pin 1 and 2 on control board terminal CN5 of your State Water Heaters Water Heater, replace the control board if previous steps have been performed and results were successful.
What to do if 120 VAC is not present to the transformer from the control board in State Water Heaters Utra-Force STC-077 Water Heater?
If 120 VAC is not present to the transformer from the control board of your State Water Heaters Water Heater, check the CN1 plug connection. If that doesn't solve the issue, replace the control board.
What to do if 120 VAC is not present to blower from CN2 plug pin 1 and 2 in State Water Heaters Utra-Force STC-077?
If 120 VAC is not present to the blower from CN2 plug pin 1 and 2 on your State Water Heaters Water Heater, replace the control board if the call for heat is active and previous steps have been performed successfully.
What to do if 24 VAC is not present at transformer CN4 plug on control board in State Water Heaters Utra-Force STC-077?
If 24 VAC is not present at the transformer CN4 plug on the control board of your State Water Heaters Water Heater, replace the transformer if previous steps were performed and successful.
What to do if 24 VAC is not present between pin 4 on control board terminal CN3 and ground in State Water Heaters Utra-Force STC-077?
If 24 VAC is not present between pin 4 on the control board terminal CN3 and ground in your State Water Heaters Water Heater, replace the control board if previous steps have been performed and the results were successful.
What to do if blocked inlet switch does not show continuity in State Water Heaters Water Heater?
If the blocked inlet switch on your State Water Heaters Water Heater does not show continuity, replace the switch.
Describes the step-by-step heating cycle from call for heat to standby.
Essential checks and conditions to verify before starting troubleshooting.
Tests for 120 VAC power supply at the control board's CN1 terminal.
Checks for 120 VAC input and 24 VAC output from the transformer.
Verifies 24 VAC presence at the ECO probe and ensures proper function.
Checks the resistance of the upper and lower temperature probes.
Tests for continuity between pressure switch terminals.
Checks for 120 VAC power supply to the blower motor.
Measures air and gas pressures and checks switch continuity during operation.
Tests for 120 VAC power supply to the ignitor during warm-up.
Measures the resistance of the hot surface ignitor (HSI).
Checks for 24 VAC supply to the gas valve during ignition trial.
General| Brand | State Water Heaters |
|---|---|
| Model | Ultra-Force STC-077 |
| Tank Capacity | 77 gallons |
| Maximum Temperature | 180°F |
| Voltage | 480V |
| Insulation | Non-CFC foam |
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