| Symptom | Possible Problem | Recommendation |
| LOW PRESSURE | Water pressure related problem or blown fuse. | Clean filter and all baskets. |
| Do a backpressure test. Check fuse. If fuse is blown, check for short circuits in the control wiring. |
| Call Service 716-649-7640 |
| HI LIM SW | Low water flow problem. High limit(s) open. | Replace limit(s), do a Temperature Rise Test. Call Service 716-649-7640 |
| EXT.SW.1 | Fusible Link or Exhaust Temp. Limit Switch open. Too much heat in the cabinet (Fusible Link) or flue (Exhaust Temp. Limit Switch). | Fusible Link open: check for soot heat exchanger, low gas pressure, down draft condition and/or water flow problem. Do a Gas Pressure Test and Temperature Rise Test. Exhaust Temp Limit Switch: check for blockage of vent. Call Service 716-649-7640 |
| AIR FLOW SW | Insufficient vacuum to close the air pressure switch. | Make certain the fan is running. Check the air hose from the fan to the Air Pressure Switch for holes and kinks. If the fan never switches to high speed replace the Ignition Control. Call Service 716-649-7640 |
| AGS | Automatic Gas Shutdown simply means the Ignition Control did not sense flame rectification. | Make certain all gas cocks are open, and there is sufficient gas pressure and volume (gas line sized properly). If the heater fires and then the flame goes out quickly, it indicates the rectification signal is not returning to the Ignition Control. Check for poor or missing ground wire. Call Service 716-649-7640 |
| TEMP SENSOR | Water temperature sensor open or shorted. The sensor is a 10 K Ohms thermostat. A sensor failure may indicate poor water chemistry. | Carefully test the water, concentrating on Total Alkalinity and PH. Call Service 716-649-7640 |
| FL1 | Temperature Sensor Error | Call Service 716-649-7640 |
| FL2 | No Ignition or No Flame | Call Service 716-649-7640 |
| FL3 | Flame Sensor Error | Call Service 716-649-7640 |
| FL4 | Ignitor Failure | Call Service 716-649-7640 |
| FL5 | Brownout Condition | Call Service 716-649-7640 |
| FL6 | Power Control Failure | Call Service 716-649-7640 |
| FL7 | Remote Operation Circuit | Call Service 716-649-7640 |
| Water Coming from Bottom of Heater | Most Likely Bad Heat Exchanger | Call Service 716-649-7640 |
| No Display | Bad Transformer | Call Service 716-649-7640 |
| No Electric to Heater | Call Service 716-649-7640 |
| Slow to Heat Up | Normal Temp. Rise =1◦ an 1 hr. Bypass valve stuck Call Service 716-649-7640 |
| Heater Cycles Off & On | Low Water Level | Raise Pool Water Level |
| Wind Causing Down Draft | Call Service 716-649-7640 |
| Set Point Temp. Too Low | Raise Temp. |
| Black Smoke | Low Gas Pressure | Call Service 716-649-7640 |
| Low Propane | Call Propane Supply |
Not Enough Air Flow to Heater Water may not be flowing through heater | Clean Debris or Mulch from Base of heater Shut off pump and call service |
| Melted Pipes Coming Out of Heater | Heater Was Not Turned Off Prior to pump shutting off | Call Service 716-649-7640 |
| Heater Doesn't Light | Low Gas Pressure / No Gas /Bad Switch | Turn Red Valve in Gas Line |
| Call Propane Supplier – Call Service 716-649-7640 |