Page 4 LXi
™
Pool/Spa Heater Installation and Operation Manual
Section 7. Operating Instructions .......... 30
7.1 Normal Operation ....................................30
7.2 Start-Up ...................................................30
7.3 Operating the Controller ..........................31
7.3.1 Off Mode ....................................32
7.3.2 Pool Mode - (Normal Heat) ........32
7.3.3 Pool Mode - (Optional Maintain
Heat) ..........................................32
7.3.4 Spa Mode - (Normal Heat) .........32
7.3.5 Spa Mode - (Optional Maintain
Heat) ..........................................32
7.4 User Setup Options .................................32
7.4.1 Language Setup .........................32
7.4.2 Temperature Scale Setup ..........33
7.4.3 Spa Timer Setup ........................33
7.4.4 Display Light Setup ....................33
7.5 Set Point Lockout ....................................33
7.6 Lighting and Shutdown Procedures ........33
7.6.1 Lighting the Heater .....................35
7.6.2 Shutdown ...................................35
7.7 Adjusting the Water Pressure Switch ......35
7.8 Temperature Rise ....................................36
7.9 Burner Throat Pressure Adjustment ........37
Section 8. Maintenance ........................... 37
8.1 Water Chemistry ......................................37
8.2 Seasonal Care .........................................38
8.2.1 Spring and Fall Operation ..........38
8.2.2 Winterizing .................................38
8.2.3 Spring Start-up ...........................38
8.3 Inspection and Service ............................38
8.3.1 Owner Inspection .......................39
8.3.2 Professional Inspection ..............39
Section 9. Troubleshooting .................... 40
9.1 General Heater Troubleshooting .............40
9.2 Service Codes .........................................40
9.3 Ignition Control LED Service Codes ........40
Section 10. Professional Maintenance and
Service .................................. 43
10.1 General Information .................................43
10.2 “Premix” Forced-Draft Combustion
System ....................................................43
10.3 Heater Components and Their
Operation .................................................43
10.4 Special Service Issues - Premix
Combustion System ................................44
10.4.1 System Operation .......................44
10.4.2 Field Service and Adjustment .....44
10.4.3 Burner Throat Pressure
Adjustment .................................45
10.5 Electrical Troubleshooting .......................45
10.5.1 Electrical Power Supply ..............45
10.5.2 Controller ...................................46
10.5.3 Control Circuit Troubleshooting ..46
10.5.3.1 Transformer .........................46
10.5.3.2 Fuse ....................................46
10.5.3.3 Water Pressure Switch ........46
10.5.3.4 Fusible Link .........................47
10.5.3.5 Temperature Limit Switches
Circuit ..................................47
10.5.3.6 Blower Pressure Switch
Circuit ..................................47
10.5.3.7 Gas Valve Voltage ...............48
10.5.3.8 Igniter/Ignition Control
Circuit ..................................48
Section 11. Replacement Parts .............. 51
11.1 Ordering Information ...............................51
11.2 Parts List .................................................51
11.3 General Exploded View ...........................53
11.4 Detailed Exploded View ..........................54
11.5 Exploded View of Heat Exchanger,
ASME ......................................................55
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