Complete Williams Refrigeration Error Code Directory

For Ease of access we have desgined a Error code lookup tool below which will give you the error code details and the solution once you type the error code in and click on the button.

Williams Error Code Lookup

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Williams Error Code Lookup

Enter Error Code:

Alternatively, you can have a look at the error codes below on what they mean and fixes for the same

Temperature Control Errors (E01-E09)

E01: High Temperature Alert

Cabinet temperature above safe operating range
Most common cause: faulty door seal or ventilation problems

E02: Low Temperature Alert

Cabinet temperature below programmed range
Usually indicates controller or sensor faults

E03: Cabinet Sensor Error

Main cabinet temperature sensor failure
May appear as “—” on display screen

E04: Evaporator Sensor Failure

Evaporator probe malfunction
Often linked to defrosting issues

E05: Condenser Sensor Error

Condenser temperature monitoring failure
May affect compressor operation

E06: Ambient Sensor Fault

Room temperature sensor malfunction
Affects unit’s efficiency calculations

E07: Product Sensor Error

Food probe malfunction
Impacts blast chilling programmes

E08: Temperature Control Error

General temperature regulation failure
May indicate control board faults

E09: Temperature Deviation Alert

Unexpected temperature fluctuation
Could indicate system instability

System Operation Errors (E10-E19)

E10: Door Open Alert

Door left open beyond preset time
Safety feature to prevent temperature loss

E11: Power Supply Error

Mains voltage fluctuation detected
Protection for electronic components

E12: Memory Error

Control board memory corruption
May require system reset

E13: Communication Error

Internal system communication failure
Often between display and main circuit board

E14: Fan Motor Error

Evaporator or condenser fan failure
Impacts cooling efficiency

E15: Defrost Error

Defrost cycle malfunction
May present as extended defrost times

E16: Compressor High Pressure

Excessive discharge pressure
Often due to dirty condenser

E17: Compressor Low Pressure

Insufficient suction pressure
May indicate refrigerant leak

E18: Compressor Runtime Error

Excessive continuous operation
Could indicate refrigerant issues

E19: Compressor Start Error

Compressor failing to start
May indicate electrical faults

Performance Errors (E20-E29)

E20: Energy Usage Alert

Abnormal power consumption
May indicate efficiency issues

E21: Defrost Performance

Incomplete defrost cycle
Risk of ice build-up

E22: Recovery Time Alert

Slow temperature recovery
System efficiency concern

E23: Superheat Error

Incorrect superheat reading
Expansion valve issue

E24: Sub-cooling Error

Improper sub-cooling
May indicate charge issues

E25: Air Flow Alert

Restricted air circulation
Check for blockages

Performance Errors (E20-E29)

E20: Energy Usage Alert

Abnormal power consumption
May indicate efficiency issues

E21: Defrost Performance

Incomplete defrost cycle
Risk of ice build-up

E22: Recovery Time Alert

Slow temperature recovery
System efficiency concern

E23: Superheat Error

Incorrect superheat reading
Expansion valve issue

E24: Sub-cooling Error

Improper sub-cooling
May indicate charge issues

E25: Air Flow Alert

Restricted air circulation
Check for blockages

System Configuration Errors (E30-E39)

E30: Configuration Error

System setup mismatch
Check settings accuracy

E31: Clock Error

Real-time clock failure
Impacts timed operations

E32: Parameter Error

Operating parameter corruption
May require reprogramming

E33: Calibration Error

Sensor calibration failure
Accuracy concern

E34: Network Error

HACCP data logging issue
Communication system fault

Critical System Errors (E40-E49)

E40: Emergency Stop

Critical system shutdown
Immediate attention required

E41: Gas Leak Detection

Refrigerant leak sensor alert
Safety shutdown trigger

E42: Critical Component Failure

Major system component fault
Requires technical service

E43: Safety Circuit Error

Safety system activation
Check all safety components

Maintenance Alerts (E50-E59)

E50: Service Due

Scheduled maintenance reminder
Not a fault condition

E51: Filter Change Required

Air filter replacement due
Efficiency impact

E52: Cleaning Required

Condenser cleaning alert
Performance impact

E53: Battery Low

Control system battery warning
Affects memory retention

Required Actions for All Error Codes:

Document the error code
Note any patterns or triggers
Check basic conditions (power, temperature, cleanliness)
Consult the user manual for specific guidance
Contact authorised service engineer if error persists

Important Notes:

Some codes may vary by model and year
Multiple errors may indicate related issues
Always check the simplest solutions first
Keep service contact information readily available
Document all maintenance and error occurrences in the service log

Contact Be Cool Refrigeration for Expert Service

At Be Cool Refrigeration, we understand that equipment downtime can significantly impact your operation. Our team of qualified engineers specialises in Williams refrigeration systems and can quickly diagnose and resolve any error code issues you encounter.

Why Choose Be Cool Refrigeration:

➜ Specialist Williams refrigeration engineers
➜ Rapid on-site diagnostics and repairs
➜ Comprehensive error code expertise
➜ Minimised equipment downtime
➜ Full system health checks
➜ Emergency callout service available

Contact Information

For Immediate Assistance:

Telephone: 0203 488 1889
✔︎ Available for emergency and scheduled repairs
✔︎ Coverage across the service area
✔︎ Professional, reliable solutions

Don’t let error codes affect your business operations. Our experienced team is ready to provide swift, professional service to get your Williams equipment back to peak performance.