PHP Resource Page

Technical Bulletins 

TB141001 – PHP-23A Heaters Controller – Voltage Drop

TB140201 – PHP-23A Heaters manufactured prior to 2013 – Control Unit Updates

TB140202 – PHP-23A, PHP-51W Heaters – Heater Serial Numbers

TB140701 – PHP-23A, PHP-51W Heaters – Blink Codes

TB210201 – PH20A and PH40A Heaters – Main Wiring Connections

TB210202 – All Fuel Fired Heaters – Solving Combustion Issues

TB210203 – All Engine Heaters – Engine Heater Plumbing Guidelines

TB210204 – All Engine Heaters – Coolant Leaks