1. Information before dispatch
Send the heater brand, model number, error code, postal code, and a clear rating-plate photo. This helps identify the platform and likely service requirements before arrival.

Pool Heater Experts · Mazgan Inc.
A structured diagnostic process reduces guesswork and helps separate a failed component from an underlying airflow, water-flow, gas, combustion, or maintenance problem.

Technical guidance
Send the heater brand, model number, error code, postal code, and a clear rating-plate photo. This helps identify the platform and likely service requirements before arrival.
The technician checks installation condition, clearances, visible damage, venting, water leaks, wiring condition, gas piping, and signs of overheating or rollout.
Testing follows the heater sequence. Water flow, pressure switch, limits, ignition command, spark or hot-surface ignition, gas valve output, flame signal, and temperature response are reviewed.
You receive the findings and a repair recommendation. Additional repair work starts after the scope and price are approved.
After repair, the unit is started and checked through an operating cycle. Relevant safety controls, flame stability, temperature rise, and shutdown response are verified.
Common questions
Send the heater details for faster review.