Emerson E2 operation manual Symptom Possible Problem Solution

SYMPTOM	POSSIBLE PROBLEM	SOLUTION
Compressor will not Operate	8RO fail-safes are not wired cor-	Verify fail-safe wiring on 8RO
(Cont.)	rectly.	board for N.O./N.C. positions.
		One wire of the two-wire con-
		nection should always be con-
		nected to the middle terminal.
		The second wire must be either
		connected to the N.C. terminal
		(if you want the relay to be
		closed (ON) during power fail-
		ure) or the N.O. terminal (if you
		want the relay to be open (OFF)
		during power failure.)
	Compressor in override.	Highlight compressor stage and
		cancel the override by pressing
		Enter to open the Actions Menu.
		Select 3 for Override options, or
		go to the Override/Bypass Log
		to view and cancel overrides:
		1. From the Main Menu, press 8
		to open the Status menu.
		2. From the Status menu, press 4
		for the Graphs/Logs menu.
		3. Press 3 for the Override/
		Bypass Log. (This screen gives
		you quick access to all overrides/
		bypasses in the system)
	Rack is in Phase Fail.	Verify correct phase and verify
		correct input for phase loss.
		If you specified that phase pro-
		tection would be used on this
		rack, the Phase Loss input is dis-
		played. The Phase Loss input is
		automatically configured to use
		E2’s Global Data phase loss pro-
		tection source. If you wish to
		define a different source, re-
		define this input definition. To
		point this input to a board and
		point address: press 
		(EDIT) and then 1 to change the
		definition format.
	Oil sensors are set up but are not	Remove oil sensors from indi-
	in use.	vidual compressors.
		1. Highlight the Comp Setup tab
		(C6) in the Suction Group Setup
		screen.
		2. Use the arrow keys to select
		the OIL SENSOR field.
		3. Choose “None” from the
		LOOK UP menu.

F-4 • E2 RX/BX/CX I&O Manual 026-1610 Rev 13 14-SEP-2011