Daikin MicroTech II Operation And Maintenance Manual

Also see for MicroTech II: Installation and Maintenance Installation and maintenance manual Installation and maintenance manual

Daikin MicroTech II Operation And Maintenance Manual Manual pdf 38 page image

OM 752-4 38 www.DaikinApplied.comdIaGnostICs and serVICeThe most important aspect of troubleshooting unit ventilator controls is to isolate thesource of the problem into one of two categories:1. The problem resides within the UVC.2. The problem is external to the UVC. Under most circumstances the problem isexternal to the UVC.Alarm and Fault MonitoringThe UVC is programmed to monitor the unit for specific alarm conditions. If an alarmcondition exists, a fault occurs. When a fault exists, the following occurs:• The UVC indicates the fault condition by displaying the fault code on the keypad/display.• The remote wall-mounted sensor (optional) LED flashes a pattern indicating that afault condition exists.• The fault signal binary output energizes.• The fault performs the appropriate control actions as described for each fault.Manual reset faults can be reset in one of three ways:• By cycling the unit power.• Via the keypad/display menu.• Via the network interface.Table 21: Alarm and fault code summaryPriority Fault description Reset Keypad/ displayfault codes1 Space Temp Sensor Failure Auto f02 Not used f13 Not used f24 Not used f35 Not used f46 Not used f57 Outdoor Temp Sensor Failure Auto f68 Discharge Air Temp Sensor Failure Auto f79 Not used f810 Not used f911 Space Humidity Sensor Failure Auto fa12 Outdoor Humidity Sensor Failure Auto fb13 Space CO2Sensor Failure Auto fc14 Not Used fd15 Not Used fe16 Change Filter Indication Manual ff17 EPROM Memory Indicator Replace conroller board ee18 Configuration Display Download file --