CB500 - Circuit Board -3 Speed 500 3-speed circuit board
CB201 - Circuit Board UCQB - (H,M circuit board kit for 18HBX(Q)B-(HW) UC(HW)(QB) fan coil
CB600 - Control Board for vertical units with ECM blower motor - AN410 - 18-60VHB(Q)(X)B(-HW), 10-20VMB(E)(-HW)
CB502 - Circuit Board Heater
CB401 - Control Board WSVC, WSVX, WSHC, WSHX