SENSOR REPLACEMENT (see manual for details)
The COSTARŽ VC CO sensor has a lifetime of at least 2.5 years. About 60 days before the end of life, the COSTARŽ VC will begin to beep once every 15 seconds. If the sensor is not replaced within 60 days, the COSTARŽ VC will turn the fans ON and go into fault mode. It cannot be reset until the sensor is replaced.
A. Purchase a replacement CO sensor module from your supplier or the Quantum Group Inc.
B. Turn OFF the power to COSTARŽ VC and the fan control system.
C. Open enclosure and remove old sensor module by pulling it straight out of its socket.
D. Insert new sensor module into socket. Seat firmly.
E. Perform Power-UP and test procedure.