539. Support: Bath Heater not working

You have reported that the bath heater is not heating. Please have an electrician or a licensed contractor who is experienced in this field to perform the following inspection. First of all the jetted bath tub needs to be filled up to the required level with hot water (check with the hot tub manufacturer for the appropriate water level). The bath heater is meant to maintain the hot water in the bath tub. It is not meant to heat the water from scratch (cold water). If you are starting with cold water, the bath heater will not feel hot to the touch because cold water is passing through the heater metal tube which cools off the tube from getting hot. Therefore the heater metal tube will only get as warm as the water passing through. Start with hot water to maintain the hot water. Starting with cold water will take a very long time to heat up (depending on water volume). *Recommended starting water temperature is 95 degrees F. The red or orange heater indicator light should light up which indicates that the heater is on. This will occur if there is strong water pressure from the jets, and there is electricity to the bath heater. NOTE: At higher water temperatures (approximately from 97 to 104 degrees F) the Heater "ON" light may turn on for 3 minutes, turn off for 3 minutes, and continue this sequence until the max water temperature of 104 degrees is reached. This is normal operation. When troubleshooting, watch the heater for at least 6 to 12 minutes to verify if the heater ON light does come on with this sequence. If the bath heater does not maintain the hot water, please troubleshoot. - Verify to see if there is strong water pressure from the jets. Water must be filled up to the proper level, and the bath pump needs to be on and pushing strong water pressure out of the jets. If no strong water pressure, have the bath pump and the plumbing checked out. If the bath pump does not run at all, check out the bath pump and electricity to the bath pump. - Make sure the bath heater is installed on the correct side of the bath pump. Bath Heaters with built-in pressure switch are to be installed on the pressure side of the pump. A pressure of 1.4 PSI is required for the pressure switch version. The pressure or discharge side is located on top of the pump. Bath Heaters with built-in vacuum switch are to be installed on the vacuum side of the pump. A vacuum pressure of -1.4 PSI is required for the vacuum switch version (Note the minus sign). The vacuum or suction side is located in front of the pump. Correct the installation if needed. - If there is strong water pressure out of the jets and the bath heater is not working its possible that the water temperature is above 104 degrees Fahrenheit, there is no power to the bath heater, not enough water pressure through the plumbing lines, the reset switch has tripped or the problem may be the bath heater itself. Verify correct power to the bath heater. Verify that there is pressure in the plumbing. If the required pressure is not met, reposition the bath heater along the plumbing line or adjust the plumbing (re-plumbing is required). The red or orange heater indicator light on the bath heater should light up when it is heating. - Note that our bath heaters are rated for up to a 70 gallon hot tub. Any hot tub that is more than 70 gallons should consider using a spa heater. NOTE FOR SOAKING TUBS (No Jets): Soaking tubs normally don't have jets installed, and the output pipe is an open flow with minimal pressure. If a bath heater with built-in pressure switch is installed on a tub without jets, make sure to install a ball valve on the output side of the heater. Then adjust the ball valve slightly to the position that will allow the heater ON light to turn on (water temp must be below 104 degrees). This is to increase water pressure in the pipe that will activate the pressure switch on the bath heater. Do not adjust the ball valve completely. This will stop water flow and can damage the pump and bath heater. If everything is checked out good and the bath heater is not maintaining the hot water, contact us for an RMA to have the bath heater returned for inspection.