Troubleshooting guide

Page 16 of 28 / OM 931-3
Initial Power up
Figure 8: I/O Expansion Board Configuration Jumper Terminals
Table 6: I/O Expansion Board Configuration Jumper Settings
Jumper Description Options
JP1 Number of Compressors
Open for single compressor
Shorted for dual compressor
JP2 Hot Gas/Water Reheat
Open to disable reheat
Shorted to enable reheat
JP3 and JP4 open for no supplemental heat
JP3 & JP4 Supplemental Heat Type JP3 open, JP4 shorted for boilerless electric heat
JP3 and JP4 shorted is an invalid setting
JP5 and JP6 open for single-speed fan
JP5 & JP6 Fan Speed Selection
JP5 open, JP6 shorted for three-speed fan
JP5 shorted and JP6 open for two-speed fan
JP 5 and JP6 shorted is an invalid setting
JP7 Compressor Speed Type
Open for single-speed compressor
Shorted for two-speed compressor
JP8 Future Spare