TS: L5 Will not start, there are clicks at startup

L5 Portable tankless water heater will not start – but there are audible clicks at startup:

  1. The portable tankless water heater requires a minimum of about 2 GPM and a minimum of about 25 PSI. Note: water pressure is at the lower end of operating parameters. You will need a sustained water pressure of approximately 40-60 PSI for adequate use if you are using a 12/18/120-volt pump. See adjustment in previous section.
  2. High Wind. For safety reasons, the heater will not start in sustained wind, find an alternate location for the water heater.
  3. Out of, or low on gas. Propane gas cylinders sometimes are contaminated with air, especially new tanks upon their first filling. Cycle the portable tankless water heater on and off by using the shower head switch several times (5) to purge the air from the gas.
  4. One of the ignition sensors is bent and/or too close to the burner. Look to ensure that the ignition pins and the heat sensor are completely vertical and they do a 90 degree to the back of the box. If they are not straight (i.e. a 45-degree angle) then you can straighten them with pliers. Please call technical support at 866.356.1992 for assistance with this matter.
  5. The thermocouple is either too high or too low to complete the circuit. Check to ensure that the thermocouple is flush with the hole in the heat exchanger. Please contact technical support at our support page by creating a ticket, live chatting with an agent, or scheduling a call for assistance. 
  6. The gas sensor wire might have come loose or is no longer connected. Please contact technical support at our support page by creating a ticket, live chatting with an agent, or scheduling a call for assistance. 
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