Inspect your water heater for:

  • Discolored Water: Rust or corrosion in the heating system can lead to water discoloration.

  • Unusual Noises: Rumbling, buzzing, or rattling sounds from the water heater may indicate sediment buildup.

  • Cool Water Temperature: If your hot water is not as hot as it used to be, a repair may be necessary.

  • Leaks: Any visible leaks from the water heater should be promptly addressed.

  • Strange Odors: Pungent odors or increased air bubbles in your water can signal the need for repair.

  • Exterior Blockages: Check for blockages on the exterior – frost build up, nests, items leaning on outdoor termination, etc…

Use this checklist for troubleshooting and you may not need to reach out for support.

Problem Possible Cause(s) Corrective Action
Insufficient Hot Water
  1. Thermostat set too low.
  2. Leaking faucets.
  3. Wrong piping connections.
  4. Water heater too small.
  5. Sediment or lime in tank.
  6. Long runs of exposed piping.
  7. Hot-water piping in outside wall.
  1. Turn temperature knob to higher setting.
  2. Repair faucets.
  3. Correct piping: dip tube must be in cold inlet.
  4. Install adequate heater.
  5. Drain/flush-provide water treatment if needed.
  6. Insulate piping.
  7. Insulate piping.
Water Is Too Hot
  1. Thermostat setting is too high.
  2. Heater stacking (Failure to install the proper vent screens)
  1. Turn temperature knob to lower setting.
  2. Ensure correct size of exhaust and air intake pipes were used per the instruction manual for vent length. Ensure proper vent screens were used.
Slow Hot Water Recovery
  1. Thermostat set too low.
  2. Wrong piping connection.
  3. Wasted hot water.
  4. Heater too small.
  1. Turn temperature knob to higher setting
  2. Correct piping-dip tube must be in cold inlet.
  3. Advise customer.
  4. Install adequate heater.
Drip From Relief Valve
  1. Heater stacking (Failure to install the proper vent screens)
  2. Closed water system
  3. Pressure build-up
  4. Improperly seated valve
  1. Ensure the correct size of exhaust and air intake pipes were used per the instruction manual for vent length. Ensure the proper vent screens were used.
  2. See thermal expansion section
  3. Use a pressure-reducing valve and relief valve
  4. Check Relief valve for proper operation (Do Not plug T&P valve)
Smelly Water
  1. Sulfides in water supply
  2. Bacteria in water supply
  3. Incompatible anode
  1. Chlorination procedure
  2. Chlorination procedure
  3. Replace with anode appropriate for water conditions
Condensation
  1. Filling the new water heater for the first time
  2. Water dripping from blower assembly
  1. Normal operation: the condensation should disappear after heater warms up
  2. Install condensate hose to drain port on the rubber coupling
Water Leakage
  1. Check Leakage Checkpoints
Exhaust Pipe Too Hot
  1. Failure to use correct size of exhaust and air intake pipes
  2. Failure to install the vent screens
  3. Blower high limit switch fails to open – switch defective
  1. Ensure the correct size of exhaust and air intake pipes were used per the instruction manual. Ensure maximum number of elbows or equivalent feet of both pipes was not exceeded.
  2. Ensure that the proper vent screens were used.
  3. Replace blower high limit switch

Your Hot Water Tank Requires Annual Servicing.

To comply with manufacturers warranty your tankless water heater requires annual services. A full flush and descaling are necessary for optimum performance. If you are still experiencing issues with your water heater after troubleshooting with this check list, please submit a service request or call us for support.

Phone: (403) 250-1157