Premature Heat Exchanger Damage or Failure The heat exchanger in your Hayward pool heater is made from the highest quality of copper and nickel heat exchanger is state of the art in pool heater design and manufacture. Pomona, CA Clemmons, NC Nashville, TN Tel: 908-355-7995 www.hayward-pool.com USE ONLY HAYWARD GENUINE REPLACEMENT PARTS 5 WARNING – Failure to remove pressure test plugs and/or plugs used in winterization of the pool/spa from the suction outlets can result in an increase potential for suction entrapment as described above. Price was cheaper than any local pool store, and the heater was only down for 2 days because of Prime Shipping. Hello, I have a Hayward H250 and had a service tech tell me I need a new thermostat and hi limit switches. The simplest fix is replacing the pressure switch, which you can find professional guidance for here. Audio turned out weird, so you may have to turn the volume up!How to diagnose and repair your Hayward H Series (H250) Gas pool heater Remove the wires from the pressure switch. In case the heater does not turn down with the pump, you need to repeat the above steps until the switch is adjusted properly. Heater must then be in Spa or Pool Mode for operation. Hayward Pool Heater - Pressure Switch Wiring Question Hi there, Last year, a contractor winterized my pool and unscrewed the pressure switch of the H250 pool heater after disconnecting the two wires (one blue, one white). One day, my heater began gushing water from under the cover unexpectedly. 6. I can order the switches and thermostat and do it myself (I replaced the pilot assembly and pressure switch myself last year), the issue is that the hi limit switches come in a pack of 3, and I only see 2 to be replaced on the heater. Step 1: Step 2: Step 3: Press the Mode button to place the heater in Standby Mode. Pool Heat Pump Maintenance: Clean the Coils: Shut off power to the heat pump at the breaker, and use a garden hose with nozzle to spray the external coil of the heater, from top to bottom. Abandon existing switch for Hayward R-22 heat pumps. 4.) Replace the pressure switch. 3.) With this setting the heater shuts off everytime the pump is shut off. Control Configuration- Two wire Note: 104° maximum temperature. To replace the pressure switch, a qualified technician should perform the steps that are outlined below. Remove and connect multimeter to wire ends and measure Ohm’s reading. It's a pressure switch to fix you Hayward pool heater. Use a swivel tee on the low side access port. If the pump is receiving water but not detecting it, a pressure switch needs replacement. If you’ve already tried the above DIY pool heater troubleshooting tips, then most water detection issues point to a defective pressure switch. Never operate the pool heater without first properly adjusting the water pressure switch. For the heater to fire on low-speed the pressure switch needs to be almost completely turned counter clockwise. If unfamiliar with the term, the heater ‘Coil’ is the metal vanes seen around the outside, through which air is drawn into the heater. Replacement switch is a screw on switch. I have a 1.5 HP Hayward SuperPump with a two-speed motor. Reset the breaker for the electrical circuit to the pool heater by flipping the breaker switch to the "Off" position and then to the "On" position. The heater will fire when instructed by the external control. Turned out that my old switch blew it's top off like Mount Saint Helen. There is about 1/2 turn left on the the adjustment screw. For Summit and Hayward R-410A units replace existing screw on LP switch with new. NOTE 4 Blue LP wires. 1. 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