Cornelius CR1200, IAC 322, IAC227, CR800, CR1400, IWC530, IWC330, IWC322, IAC330, IAC522, IWC522 Trouble

Trouble		Probable Cause		Remedy
COMPRESSOR RUNS BUT	A.	Low charge.	A.	Leak check – Recharge.
DOES NOT COOL, CIRCUIT
BOARD INDICATOR LIGHTS
“ON”
	B.	Hot gas solenoid leaking.	B.	Replace.
	C.	Defective expansion valve.	C.	Replace.
	D.	Inefficient compressor.	D.	Replace.
	E.	Internal by-pass open,	E.	Permit pressures to equalize.
		compressor noisy.
CUBER REMAINS IN THE	A.	Check suction line thermistor	A.	Tighten, reattach.
FREEZE CYCLE		(sensor) lead wire connection
		at the circuit board.
	B.	Evaporator thermistor shorted.	B.	Replace.

C.Check thermistor (1K ohm).

D.Ice bridge setting too low.

C.Replace if out of range.

D.Adjust per bridge adjustment instructions.

E.Expansion valve failure (will not pull down).

E.Tighten bulb, replace as needed. See check-out procedure.

CUBER REMAINS IN THE	SUCTION LINE THERMISTOR
HARVEST CYCLE	OPEN (STARTS IN HARVEST)
	A. Loose connection at the circuit A. Tighten or reconnect.
	board.

B.Test thermistor.

PROXIMITY SWITCH LIGHT “OUT”

C.Loose wire connection at circuit board.

B.Replace if out of range.

C.Tighten, reattach wire.

D. Proximity switch defective, see D. Replace as needed. check-out procedure.

E.Water curtain stuck, curtain frozen to ice on evaporator. Curtain hung on water pan, proximity switch out of range.

PROXIMITY SWITCH LIGHT “ON”

F.Circuit board failure. Check voltage output.

E.Check and adjust as needed.

F.Replace as needed.

G.Ice weight too light.

G.Adjust bridge per Bridge Adjustment instructions.

H.Potentiometer set too high.

H.Adjust bridge per Bridge Adjustment instructions.

I. Water curtain stuck, curtain	I. Check and adjust as needed.
frozen to ice on evaporator.
Curtain hung on water pan,
proximity switch out of range.

166240004	52	12/1/94
		Rev 3/4/96