Here are some helpful files in PDF format. Some of these files are written for trained service tech's, so if you don't completely understand the content, best to hire someone who does.
Electrical and Error Codes
Balboa M7 Service Manual VS Systems Lots of Manufacturers use Balboa System Controls
Error Codes Explained for J-300 Series Hot Tubs
How to Replace the Temperature Sensor In a J-300 Series Hot Tub
Simple Flow Switch Troubleshooting for J-300 Series Hot Tubs
Digital Multi Meter Symbols Explained
Balboa Service Manual. Works for Platinum, Select, Echo and Z Series Models built before 2001.
Circuit Board Replacement Chart for J-200 Series Hot Tubs
Circuit Board Replacement Chart for J-300 Series Hot Tubs 2002 to 2013
Circuit Board Pin Configurations for LED J-300 and J-200 Series
Resistance Chart for Temp and Hi Limit Sensors J-200 and J-300 Series
Plumbing and Jet Repair
Power Pro LX Retro Fit Jet Conversion
Instructions for Installing our Retro Fit Circulation Pump
Pump Head Adjustment (How to Clock)
Miscellaneous
Fill Instructions for J-300 Hot Tubs (How to Prevent Air Locks in Pumps)
Owners Manuals
