Pentair MasterTemp 400 User Manual

P/N 474131 Rev. M 8/2020 MasterTemp Pool and Spa Heater
9
Contents
Section 2. Operations (Start-Up / Before Start-Up) .............................................................................................. 40
Basic System Operation / START-UP OPERATION - HSI (Hot-Surface Ignition) Lighting/Operation ................................................. 40
Operating Instructions .......................................................................................................................................................................... 41
To Turn Off Gas to Appliance ............................................................................................................................................................... 41
Safety Controls (Air Flow Switch / Water Pressure Switch / Hight Limits / Operation of Ignitiion Module) ........................................... 42 - 43
Control Panel / Menu Navigation / Operating the Heater ..................................................................................................................... 44
Menu .................................................................................................................................................................................................... 45
Section 3. Troubleshooting .................................................................................................... 46
Initial Troubleshooting / Error and Fault Codes .................................................................................................................................... 47
Troubleshooting Flow Charts ................................................................................................................................................................ 48
Heater Will Not Fire Troubleshooting (A, B) ..................................................................................................................................... 49 - 50
IGN is ON ALARMS: AGS, AFS, HLS, PS, E01 or 126 / SFS ............................................................................................................. 51 - 53
Burner / Heat Exchanger Troubleshooting ........................................................................................................................................... 54
Section 4. Maintenance ........................................................................................................... 55
Care and Maintenance .................................................................................................................................................... 55
Checking the Gas Control Valve ...................................................................................................................................... 55
De-Liming the Heater - Pressure Relief Valve (PRV ....................................................................................................... 56
Water Pipe Escutcheon Installation ................................................................................................................................. 57
After Start-Up ................................................................................................................................................................... 58
Spring, Fall (Autumn) and Winter Operation ................................................................................................................... 58
Maintaining Pool Temperature / Energy Saving Tips ...................................................................................................... 58
Chemical Balance ............................................................................................................................................................ 59 - 60
Section 5. Replacement Parts ................................................................................................ 61
Replacement Parts
............................................................................................................................................................................ 61 - 65

Pentair MasterTemp 400 Specifications

General

BTU Output	400, 000 BTU
Ignition	Electronic
Display	Digital
Model	MasterTemp 400
Category	Heater
Voltage	120V
Type	Pool Heater
Efficiency	82%
Certifications	ANSI, ASME, CSA
Fuel Type	Natural Gas or Propane
BTU Input	400, 000 BTU
Water Flow Rate	Up to 120 GPM