Cold Chain Protocol - Vaccines and Biologics



Appendix 3: Malfunctioning Refrigerator Trouble Shooting Checklist

The following checklist is designed to assist in identifying and trouble shooting issues related to possible refrigerator malfunctions.

  1. Refrigerator is too warm or cold
          Check for the following:
    • Unit is plugged in, turned on, and the control knob has been set properly.
    • Door is closing properly or has been opened too frequently within short time period.
    • Temperature recording device is properly located.
    • Freezer compartment is free of thick frost (<1 cm).
    • Good air circulation inside and outside the unit.
    • Exposed coils and the motor are free from dust.
    • Room temperature is appropriate.

Action: Call a refrigeration technician to assess equipment, if necessary.

  1. Refrigerator is too noisy (or is making an unusual noise)

Action: Call a refrigeration technician to assess equipment, if necessary.

  1. Refrigerator has stopped working
    Check for the following:
  • Electrical cord is undamaged.
  • Unit is plugged in and turned on.
  • Wall outlet is operative.

Action: Appropriate personnel to check fuses and circuit breakers. Call a refrigeration technician to assess the equipment, if necessary.

Note: If a simple solution to a cold chain problem is not immediately identified (power disconnected, fridge door ajar, temperature probe misplacement, etc.) move vaccines and biologics to a back-up refrigerator or temporarily store in Styrofoam coolers.

Communicable Disease Control (CDC)
Public Health
Manitoba Health, Seniors and Active Living

4th Floor - 300 Carlton St.
Winnipeg MB  R3B 3M9  CANADA
Phone: 204-788-6737
Fax: 204-948-2040