V-39CONTROL SYSTEMS Remote controller for indoor units (MWR-TH01, WS00, SH00) cannot be connected to the same COM2communication line with the ERV remote controller. The total number of indoor units and ERVs that can be connected to 2 ERV remote controllers is Max.16.DVM indoor unit synchronization N : N : 2 Synchronous controlOutdoor unitWired R/CCOM1(F1/F2)COM2(F3/F4)1 2 3 4 56 7 8 9 1011Connection Indoor unit : ERV : ERV remote controller = N : N : 2If even only one indoor unit is turned on, all ERVs connected by the same COM2communication line operate accordingly. If all indoor units are turned off, ERVs stop to operate.At that time, it is possible to operate the connected ERVs only with the ERV remote controllers.ERV remote controllers are not applicable for the indoor unit control.Control Control example)A. 1 Indoor unit is turned On among all indoor units ①~⑤ ➞ ERV ⑥~⑨ are automaticallyturned On.B. 1 Indoor unit is turned Off among all indoor units ①~⑤ ➞ No operation status change in allERV ⑥~⑨.C. All indoor units ①~⑤ are turned Off ➞ All ERV ⑥~⑨ are automatically turned Off.D. Turn ERV remote controller ⑩ On ➞ ERV ⑥~⑨ are all turned On, no operation statuschanges in indoor unit ①~⑤.Display Two remote controllers display identical operation status of one of connected ERV which hasthe earliest Main address.- When an error occurs in the indoor unit: Displays the indoor unit error code.Error occurrence - When an error occurs in ERV: Displays the ERV error code.- When errors occur in both indoor unit and ERV: Displays the error code with the higher value.MasterSlave05-1_control systems(002~045) 3/15/08 4:09 Page 39