Symbio 400 - Wiring A2L Monitoring sensor to Symbio 700 Condenser Updated July 25, 2026 18:58 Symbio 400Contacts are wired to J17-3 and 4. Reference SS-SVN017C-ENPage 42 Related to symbio 700 Symbio 500 symbio 400 Articles in this section BLOWER COIL 3 PHASE MOTOR INCORRECT ROTATION Symbio 400 - Wiring A2L Monitoring sensor to Symbio 700 Condenser BCXE Schematics - BCHE, BCVE or BCCE Piping Auxiliary drain connection Freeze and frost stat mounting BCXE DX cooling - Y1 Terminal Block - Symbio or CSTI BCXE Electric heat not coming on - CSTI Controls Flat filter details Electric heat clearance of 3ft explained Corner Weights for BCXE See more Related articles BCXE Schematics - BCHE, BCVE or BCCE Interconnecting wiring from a Symbio 700 Odyssey Condenser (Cooling or Heat Pump) to Symbio 400B Blower/Fan Coil Unit? DX cooling - Y1 Terminal Block - Symbio or CSTI Symbio™ 700 - Unit Controller LED Legend LCU ReliaTel RTRM LED2 Diagnostic Testing