Results 1 to 1 of 1
Thread: York DM150 UCB fault code 9
-
23-09-2010, 11:12 AM #1
York DM150 UCB fault code 9
I am a MRAP mechanic in Iraq and supporting the military. Since the draw down we are self sufficient in all aspects such as electrical and commercial a/c issues. We have 2 York DM150 units and the supply air blower is always on. The UCB is flashing a code 9 (ignition control locked out/ignition control failure/limit switch trip/ no jumper plug in heat section). When I pulled the cover from the heater section, I found the 228/Y wire from the limit connector on the unit control board to the electric heat section and wire 203/R from the 24/120 vac for outlets disconnected. The limit switch was tripped but I pulled it and reset it and wired the a fore mentioned two wires into the limit switch as shown a schematic. I wired a brand new Honeywell Pro 5220d following that schematic as well, wiring all 7 wires and programming for use with a two cool/heat unit. I attempted to reset the flash code by canceling the heat and cool request to no avail. It still flashes code 9 and only full blower. Please help. Thank you.
Similar Threads
-
Mitsubishi 1500 fault code fault
By pie man in forum Air ConditioningReplies: 9Last Post: 06-05-2010, 09:30 PM -
York A/C fault code needed
By Yuri B. in forum Air ConditioningReplies: 4Last Post: 17-08-2009, 11:19 PM -
Sanyo Text Back Fault Code Service
By techguy in forum Air ConditioningReplies: 1Last Post: 04-02-2009, 06:57 PM -
mitsubishi city multi fault code
By robin r33 gtr in forum Air ConditioningReplies: 5Last Post: 05-11-2007, 10:23 PM -
UA Daikin Fault Code
By jedi in forum Air ConditioningReplies: 2Last Post: 23-07-2007, 01:44 PM