andrews HIflo EVO HF 30/300 User Manual (English)

Questions and Answers:

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Tammie BrownAug 19, 2025
What to do if my andrews HIflo EVO HF 30/300 Water Heater has high water temperature?
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  Tracy BeardAug 19, 2025
  If the water temperature in your Andrews Water Heater is too high (over 93°C), first check the lower sensor to ensure it's fully inserted into its well and secured by the clip on the sensor wire. Then, check the readings of both the lower and upper sensors. If the readings are not within the specified range, replace the sensor. If the sensors and wire harnesses are okay, consider replacing the control board.
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Lauren AllenAug 21, 2025
Why does my andrews HIflo EVO HF 30/300 have maximum number of ignition recycles detected?
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  Thomas RobertsAug 21, 2025
  If your Andrews Water Heater is experiencing a maximum number of ignition recycles, it means the pilot flame is being lost during the run cycle and then re-established. First, check the inlet gas pressure to ensure it's not dropping below the minimum operating pressure on the rating label after the main gas valve opens. Also, verify that the gas pipe size is adequate for the water heater. Inspect the pilot shield position and the condition of the burners, cleaning or replacing them as needed. Check the pilot flame and observe the microamp output on the run cycle. Examine the pilot tubing for any crimps or damage and replace if necessary. If the wires, flame sensor, or electrode are damaged, replace the pilot.
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egeorgeAug 26, 2025
What to do if line voltage is too low or high in my andrews Water Heater?
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  Shelly DanielAug 26, 2025
  If the line voltage to your Andrews Water Heater is too low or too high, check the line voltage to the water heater. Determine the cause of the voltage issue. It is recommended to call an electrician or your utility company for assistance. Ensure that the water heater is on a separate electrical line.
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mosserinAug 27, 2025
What causes unstable DC output voltage in andrews HIflo EVO HF 30/300?
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  oneillbenjaminAug 27, 2025
  If the DC output voltage of your Andrews Water Heater is unstable, check the line voltage to the water heater for erratic readings. Also, inspect the wiring to ensure there are no shorts. If the power supply and wiring are okay, replace the control board.
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heather41Aug 29, 2025
How to fix faulty upper sensor reading in andrews HIflo EVO HF 30/300 Water Heater?
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  Charles ThomasAug 30, 2025
  If the upper sensor reading on your Andrews Water Heater is faulty due to the resistance of the upper sensor being out of the operating range, check the continuity of the wire harness to the upper sensor. If the wire harness is okay, replace the upper sensor.
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sarah16Sep 1, 2025
How to troubleshoot faulty lower sensor readings on andrews HIflo EVO HF 30/300?
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  Christopher DavisSep 1, 2025
  If the lower sensor readings on your Andrews Water Heater are faulty because the resistance of the lower sensor is out of the operating range, check the continuity of the wire harness to the lower sensor. If the wire harness is okay, replace the lower sensor.
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Dawn FinleySep 3, 2025
Why does my andrews Water Heater show AC line frequency error?
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  John CooperSep 3, 2025
  If your Andrews Water Heater is showing an AC line frequency error, which indicates a signal that is too noisy or has an incorrect frequency, check the line voltage frequency to the water heater and determine if there are wide fluctuations. If the problem persists, it is recommended to call an electrician. Ensure that the water heater is on a separate line.
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Michelle StewartSep 5, 2025
What causes flame rod to short to ground in andrews Water Heater?
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  michellesheltonSep 5, 2025
  If the flame rod is shorted to ground in your Andrews Water Heater (because the pilot flame sensor rod is shorted to ground), check to see if the flame sensor wire has bare spots touching metal parts or if the flame sensor rod is touching the pilot shield or other metal parts. Replace the pilot if the flame sense wire is damaged or the flame rod is bent.
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jeffrey83Sep 7, 2025
What to do if flame sensed out of normal sequence in andrews Water Heater?
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  Cody PaulSep 7, 2025
  If the flame is sensed out of normal sequence in your Andrews Water Heater (before opening the gas valve or after closing the gas valve), check to make sure the gas valve has closed. Ensure no voltage is present at the gas valve before or after the ignition cycle. Verify that the wire positions on the wire harness are correct. If the gas valve is stuck open, replace it.
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Pamela RiveraSep 9, 2025
Why is flame detected before ignition in my andrews HIflo EVO HF 30/300?
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  Andrew HartmanSep 9, 2025
  If the flame is detected before ignition in your Andrews Water Heater, check to ensure that the gas valve has closed properly. No voltage should be present at the gas valve before the ignition cycle. Also, verify that the wire positions on the wire harness are correct. If the gas valve is stuck open, it should be replaced.