SECTION 8. Maintenance
8.1 Water Chemistry ................................ 31
8.2 Seasonal Care.................................... 31
8.2.1 Spring and Fall Operation ................... 31
8.2.2 Winterizing ......................................... 31
8.2.3 Spring Start-up ................................... 32
8.3 Inspection and Service ....................... 32
8.3.1 Owner Inspection ............................... 33
8.3.2 Professional Inspection ...................... 33
SECTION 9. Troubleshooting
9.1 General Heater Troubleshooting ......... 34
9.2 LJ Controller Service Codes............... 34
9.2.1 Explanation of Error Codes ................ 34
9.2.2 Resetting the LJ Controller
Service Codes .................................... 35
SECTION 10. Professional Maintenance
and Service
10.1 General Information ............................ 38
10.2 Natural-Draft Combustion System ..... 38
10.3 Heater Components and
Their Operation................................... 39
10.4 Electrical Troubleshooting .................. 41
10.4.1 Electrical Power Supply...................... 41
10.4.2 Controller ............................................ 41
10.4.3 Control Circuit Troubleshooting .......... 41
10.4.3.1 Transformer ....................................... 41
10.4.3.2 Fuse ................................................... 42
10.4.3.3 Fireman Switch and
External Interlocks .............................. 42
10.4.3.4 Fusible Link ........................................ 42
10.4.3.5 Limit Switches .................................... 42
10.4.3.6 Water Pressure Switch ...................... 42
10.4.3.7 Gas Valve Voltage .............................. 43
10.4.3.8 Igniter/Ignition Control ......................... 43
SECTION 11. Replacement Parts
11.1 Ordering Information........................... 44
11.2 Parts List ............................................ 44
11.3 General Exploded View....................... 46
11.4 Detailed Exploded View ...................... 47
Warranty............................. Back Cover
TABLE OF CONTENTS (cont'd)
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