Troubleshooting

INTEGRATED SERIES (TALL & COLUMN)

TROUBLESHOOTING GUIDES

This section of the manual contains:

The Error Code Structure Table
Error Code Troubleshooting Guide
Sealed System Troubleshooting / Diagnostic Tables

HOW TO USE THE ERROR CODE TROUBLESHOOTING GUIDE

Error codes, or faults are logged when electrical errors are detected. Depending on the error's severity, the error may appear on the display when the door is opened or only when in diagnostic mode. See Error Severity Explained below.

To clear the error codes, the problem must be corrected and the unit must be ON. Then, press the Clear Faults key in diagnostic mode.

Error Severity Explained

Severity	Description
Low	1 = Error is logged and only readable through service menu, no indication to user, no chime
	2 = Splash screen to user upon door opening, error logged in service and user menu. No chime
Med	3 = Steady on screen to user upon door opening, error logged in service and user menu, No chime
	4 = Steady on screen to user upon door opening, error logged in service and user menu, with chime when door open
Critical	5 = Steady on screen to user upon door opening, error logged in service and user menu, with chime when door closed

POSSIBLE INSTRUCTION AND ERROR/FAULT INDICATORS

Code Structure

Device/System	Zones	Failures
10 Thermistor Faults	0 Misc	00 Open
15 Relay Faults	1 Zone 1	01 Short/Closed
20 Defrost Heater Faults	2 Zone 2	02 Unstable
30 Ice/Water/Accessory Faults	3 Zone 3	05 Miswire Normal Temps
35 Fan Faults	4 Defrost System	06 Miswire Overheat
40 Runtime Faults	5 Control System	07 Bad Ohms
44 Glass Heater Faults	6 Compressors	09 Too Warm/Large Temp Differential
45 Lighting Faults	7 Ambient	10 Second Device Open
50 Flow Meter Faults	8 Icemaker	11 Second Device Short/Closed
60 Load/Component Faults	9 Dispenser	12 Second Device Unstable
90 Control Faults	A Air Filter	20 Third Device Open
95 Diagnostics	L Lighting	21 Third Device Short/Closed
98 Power Faults	U Water System	22 Third Device Unstable
	H High Voltage System	25 Diagnostics Failure
	C Condenser	30 Valve Enabled Too Long
	b Baffle	33 Speed Setting Too Low
		34 Speed Setting Too High
		35 Fan Speed Error
		36 Fan Current Too Low
		37 Fan Current Too High
		38 FET Power Output Fault
		39 DC Output Fault
		40 Excessive Runtime
		42 Primary Heater Fault
		43 Secondary Heater Fault
		44 Door Heater Output Fault
		45 Burned Out Light
		46 No Position/State Detect
		50 Open Heater
		55 Triac Open
		56 Triac Short
		60 No Load/Load Open
		65 Stuck at Dispenser Water Valve Out
		66 Stuck at Ice Water Valve Out
		70 Bad Flash Write
		71 Flash Initialized
		72 Flash Memory Bad
		73 Flash Memory Not Present
		74 Invalid E2 Checksum
		75 Invalid Model E2 Checksum
		80 No Communication
		81 Communications Timeout
		82 Partial Communications
		83 Bad Micro Communication
		84 Micro Initialization
		85 Display Failure
		86 Flow Too Slow
		87 No Flow
		90 Framing Errors
		92 Excessive Collisions
		93 Data Overrun
		95 FMEA Error
		96 Calibration or Low Signal Error
		97 Quantum SPI
		98 Brownout
		99 Other

ERROR CODE TROUBLESHOOTING GUIDE

CODE	SEVERITY	FAULT DESCRIPTION	DETAILS/TEST/ACTION
10 C 00	2	Condenser Thermistor Open	Check ohms and verify temperature readings.
10 C 01	2	Condenser Thermistor Short	Check ohms and verify temperature readings.
10 C 02	2	Condenser Thermistor Unstable	Check for bad connections and/or damaged wires.
10 1 00	2	Zone 1 Cabinet Thermistor Open	Check ohms and verify temperature readings.
10 1 01	2	Zone 1 Cabinet Thermistor Short	Check ohms and verify temperature readings.
10 1 02	2	Zone 1 Cabinet Thermistor Unstable	Check for bad connections and/or damaged wires.
10 1 10	2	Zone 1 Evaporator Thermistor Open	Check ohms and verify temperature readings.
10 1 11	2	Zone 1 Evaporator Thermistor Shorted	Check ohms and verify temperature readings.
10 1 12	2	Zone 1 Evaporator Thermistor Unstable	Check for bad connections and/or damaged wires.
10 2 00	2	Zone 2 Cabinet Thermistor Open	Check ohms and verify temperature readings.
10 2 01	2	Zone 2 Cabinet Thermistor Short	Check ohms and verify temperature readings.
10 2 02	2	Zone 2 Cabinet Thermistor Unstable	Check for bad connections and/or damaged wires.
10 2 10	2	Zone 2 Evaporator Thermistor Open	Check ohms and verify temperature readings.
10 2 11	2	Zone 2 Evaporator Thermistor Shorted	Check ohms and verify temperature readings.
10 2 12	2	Zone 2 Evaporator Thermistor Unstable	Check for bad connections and/or damaged wires.
10 3 00	2	Zone 3 Cabinet Thermistor Open	Check ohms and verify temperature readings.
10 3 01	2	Zone 3 Cabinet Thermistor Short	Check ohms and verify temperature readings.
10 3 02	2	Zone 3 Cabinet Thermistor Unstable	Check for bad connections and/or damaged wires.
10 3 10	2	Zone 3 Evaporator Thermistor Open	Check ohms and verify temperature readings.
10 3 11	2	Zone 3 Evaporator Thermistor Shorted	Check ohms and verify temperature readings.
10 3 12	2	Zone 3 Evaporator Thermistor Unstable	Check for bad connections and/or damaged wires.
10 7 00	1	Ambient thermistor on control board open	Replace control board
15 1 00	5	Zone 1 compressor relay stuck open	Error is thrown if no current detected, could be no load, or open relay. Also could be the inverter or harness. Check all wiring, compressor, inverter and control board connections. Possibly issue with control board or inverter.
15 1 01	5	Zone 1 compressor relay is stuck closed. Verify and replace control board. 120V to compressor at all times.	Verify and replace control board. 120V to compressor at all times.
15 2 00	5	Zone 2 compressor relay stuck open	Error is thrown if no current detected, could be no load, or open relay. Also could be the inverter or harness. Check all wiring, compressor, inverter and control board connections. Possibly issue with control board or inverter.
15 2 01	5	Zone 2 compressor relay is stuck closed. Verify and replace control board. 120V to compressor at all times.	Verify and replace control board. 120V to compressor at all times.
15 3 00	5	Zone 3 compressor relay stuck open	Error is thrown if no current detected, could be no load, or open relay. Also could be the inverter or harness. Check all wiring, compressor, inverter and control board connections. Possibly issue with control board or inverter.
15 3 01	5	Zone 3 compressor relay is stuck closed. Verify and replace control board. 120V to compressor at all times.	Verify and replace control board. 120V to compressor at all times.
15 4 00	2	Defrost relay stuck open	Verify and replace control board. No power to defrost heater
15 4 01	3	Defrost relay stuck closed	Verify and replace control board. 120V to defrost heater at all times.
15 C 00	1	AC Condenser Fan Relay Stuck open	Verify and replace control board. No power to condenser
15 C 01	1	AC Condenser Fan Relay Stuck closed	Verify and replace control board. Power (AC or DC) to compressor at all times.
15 U 00	1	Water valve no current detected	No current change detected for a activated call for water or dispense. Possible stuck open relay, or failed valve. Check all valves and proper voltage from control output
15 U 01	4	Water valve current detected	After valid dispense or ice maker fill, current is still detected for a water call. Check for shorted relay. Replace control board.
20 2 00	2	Defrost Bi-metal stuck open	Verify the bi-metal is open circuit below 40F. Replace if necessary.
20 2 01	2	Defrost Bi-metal stuck closed	Verify the bi-metal is closed above 70F. Replace if necessary.
20 2 05	1	Defrost Bi-metal Mis-wire w/ normal temps	Normal defrost temps, but inappropriate response from bi-metal. Check wiring and bi-metal mounting.
20 2 06	2	Defrost Bi-metal Mis-wire w/ overheat	High temps during defrost, and inappropriate response from bi-metal. Check wiring and bi-metal mounting.
20 2 50	2	Defrost heater open / Check Ohms	Verify wiring and heater. Check heater ohms. Replace heater if necessary.
30 8 05	1	Icemaker no water valve in signal	No signal from icemaker for fill. Check wiring and power to ice maker.
35 1 00	2	Zone 1 Evap Fan Open	Check Control Board and Fan
35 1 33	1	Zone 1 Fan Speed Set Too Low	Verify fan not shorted - the fan is running faster than it's setting
35 1 34	1	Zone 1 Fan Speed Set too High	Check fan for obstructions that could cause too not be able to achieve full speed
35 2 00	2	Zone 2 Evap Fan Open	Check Control Board and Fan
35 2 33	1	Zone 2 Fan Speed Set Too Low	Verify fan not shorted - the fan is running faster than it's setting
35 2 34	1	Zone 2 Fan Speed Set too High	Check fan for obstructions that could cause too not be able to achieve full speed
35 3 00	2	Zone 3 Evap Fan Open	Check Control Board and Fan
35 3 33	1	Zone 3 Fan Speed Set Too Low	Verify fan not shorted - the fan is running faster than it's setting
35 3 34	1	Zone 3 Fan Speed Set too High	Check fan for obstructions that could cause too not be able to achieve full speed
35 A 00	1	Air Filter Fan Open	Check Control Board and Fan
35 C 00	1	DC Condenser Fan open	Check wiring and power to condenser fan.
35 C 33	1	DC Condenser Fan Set Too Low	Verify fan not shorted - the fan is running faster than it's setting
35 C 34	1	DC Condenser Fan Set too High	Check fan for obstructions that could cause too not be able to achieve full speed
40 1 00	1	Zone 1 Stepper Current Fault	No current detected
40 1 40	3	Zone 1 Excessive runtime	Verify performance of unit and check for door leaks, door ajar, proper charge in system, and icing of evap.
40 1 87	1	Zone 1 Stepper Cooling Fault	No cooling Detected
40 2 00	1	Zone 2 Stepper Current Fault	No current detected
40 2 40	3	Zone 2 Excessive runtime	Verify performance of unit and check for door leaks, door ajar, proper charge in system, and icing of evap.
40 2 87	1	Zone 2 Stepper Cooling Fault	No cooling Detected
40 3 40	3	Zone 3 Excessive runtime	Verify performance of unit and check for door leaks, door ajar, proper charge in system, and icing of evap.
40 9 40	1	Dispenser Max Time	Dispenser active for maximum fill time. Verify no stuck keys or flooding. Reset after 30 days, allows service time to review if any issues occurred / usage.
40 b 00	1	Baffle current fault	Baffle Stepper current fault.
40 b 87	1	Baffle Cooling Fault	Baffle Cooling / position fault
45 1 00	1	Lights open circuit	Main lights relay open
45 1 01	1	Lights short circuit	Main lights relay closed
45 2 00	1	Lights open circuit	Main lights relay open
45 2 01	1	Lights short circuit	Main lights relay closed
90 5 80	1	No UIM communications	Check wiring and key performance of User Interface Module.
90 H 80	2	High voltage micro (CCM) no communication	Communications problems on main board. Replace board.
90 H 82	1	high voltage micro (CCM) partial comm	Intermittent communications on main board.
90 H 83	2	HV Micro bad (CCM) comm	Communications problems on main board. Replace board.
90 H 84	2	HV Micro (CMM) initialization	Initialization fault. Power cycle unit and verify if code remains active.

SEALED SYSTEM TROUBLESHOOTING / DIAGNOSTICS TABLES

NORMAL OPERATING PRESSURES TABLE NOTES:

Only enter the sealed system to check pressures if the Error Code Troubleshooting Guide and General Troubleshooting Guide could not pinpoint the cause of the temperature problem.
Always use solder-on process valves when entering the sealed system. Do NOT use bolt-on process valves as they are prone to leak.
Whenever servicing the sealed system, the high-side filter-drier MUST be replaced.
Pressures listed below are not indicative of initial pull down, but rather of a steadily running and properly functioning appliance.
Pressures listed are for reference only, as actual pressure readings may vary because of one or more of the following reasons:

1. Ambient temperatures (Pressures are based on a 70°F (21°C) Ambient).
2. Temperature set-points (Pressures listed below are based on set-points of 0°F (-18°C) in freezers and 38°F (3°C) in refrigerators)
3. Food load quantity and temperature.
4. Condenser cleanliness.
5. Gauge calibration.

NORMAL OPERATING PRESSURES

Model	Normal Low-Side Pressures	Normal High-Side Pressures
IC-18FI	Freezer	5" Vac - 1 psi to 6 - 12 psi	75 psi to 120 psi
IC24R	Refrigerator	0 - 12 psi to 30 - 42 psi	75 psi to 110 psi
IC24FI	Freezer	5" Vac - 1 psi to 6 - 12 psi	75 psi to 120 psi
IC-30R(ID)	Refrigerator	0 - 12 psi to 30 - 42 psi	75 psi to 110 psi
IC-30FI	Freezer	5" Vac - 1 psi to 6 - 15 psi	75 psi to 120 psi
IC-36R(ID)	Refrigerator	0 - 12 psi to 30 - 42 psi	75 psi to 110 psi
IT-30CI(ID)	Freezer	5" Vac - 1 psi to 6 - 12 psi	75 psi to 120 psi
	Refrigerator	0 - 12 psi to 30 - 42 psi	75 psi to 110 psi
IT-30R(ID)	Refrigerator	0 - 12 psi to 30 - 42 psi	75 psi to 120 psi
IT-30FI	Freezer	5" Vac - 1 psi to 6 - 15 psi	75 psi to 120 psi
IT-36FI	Freezer	5" Vac - 1 psi to 6 - 15 psi	75 psi to 120 psi
IT-36CI(ID)	Freezer	5" Vac - 1 psi to 6 - 12 psi	75 psi to 120 psi
	Refrigerator	0 - 12 psi to 30 - 42 psi	75 psi to 110 psi
IT-36R(ID)	Refrigerator	0 - 12 psi to 30 - 42 psi	75 psi to 110 psi

PRESSURE INDICATIONS

If low-side pressure is	& high-side pressure is	possible problem is
NORMAL	NORMAL	MECHANICAL (see General Troubleshooting Guide)
LOW	LOW	LEAK
LOW	HIGH	RESTRICTION
HIGH	LOW	INEFFICIENT COMPRESSOR
HIGH	HIGH	OVER CHARGE

EVAPORATOR TEMPERATURE / SEALED SYSTEM LOW-SIDE PRESSURE CORRELATION

NOTE: The temperature/pressure table at right is for reference only. A unit's temperature/pressure correlation may differ from those listed due to: variations in evaporator thermistor location, set-points, where the sealed system is in the refrigeration cycle, etc.

If a unit is experiencing temperature problems, it is recommended that you follow the "Pointers" in the first column of the General Troubleshooting Guide. After all mechanical and electrical components have been ruled out, sealed system pressures can be checked by applying solder-on process valves and referencing the preceding page. Do NOT use bolt-on process valves as they are prone to leak. This table should only be used as a last quick check before entering the sealed system.

Temperature	Pressure
-30°F / -34°C	10" Vac / -.69 Bar
-25°F / -32°C	7" Vac / -.48 Bar
-20°F / -29°C	4" Vac / -.28 Bar
-15°F / -26°C	0" Vac / 0 Bar
-10°F / -23°C	2 Psi / .14 Bar
-5°F / -21°C	4 Psi / .28 Bar
0°F / -18°C	7 Psi / .48 Bar
5°F / -15°C	9 Psi / .62 Bar
10°F / -12°C	12 Psi / .83 Bar
15°F / -9°C	15 Psi / 1.03 Bar
20°F / -7°C	18 Psi / 1.24 Bar
25°F / -4°C	22 Psi / 1.51 Bar
30°F / -1°C	26 Psi / 1.79 Bar
35°F / 2°C	30 Psi / 2.07 Bar
40°F / 4°C	35 Psi / 2.41 Bar
45°F / 7°C	40 Psi / 2.76 Bar
50°F / 10°C	45 Psi / 3.10 Bar
55°F / 13°C	51 Psi / 3.52 Bar
60°F / 16°C	57 Psi / 3.93 Bar
65°F / 18°C	64 Psi / 4.41 Bar
70°F / 21°C	71 Psi / 4.90 Bar
75°F / 24°C	78 Psi / 5.38 Bar

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