If you've got issues with your HOTTAP getting too hot.
Similar to the above, start by making sure you've adjusted the gas & water knobs correctly. If that doesn't work, try the following:
- Incoming water temperature is too high. For example, if you have a long water inlet hose, the water in the hose can heat up in the sun – as soon as you turn on the HOTTAP the incoming water temperature is high, and the temperature shoots to 50°C (122°F) and will turn the unit off (safety cutoff).
- There is a blockage somewhere. You can check for this by comparing the spray pattern out of the showerhead at both High and Low water flow rates. If the difference in the spray pattern isn't pronounced, it indicates that you either have a blockage or that your water pressure is too low (pump underpowered).