Hatco E1

What does Hatco E1 mean?

On a Hatco FDWD-series humidified holding cabinet, E1 shows on the digital display when the air temperature sensor is malfunctioning. The control can no longer read cabinet air temperature reliably, so it cannot regulate the heat. The manual directs the operator to contact an authorized Hatco service agent or Hatco for assistance rather than attempt a field repair.

Symptoms

• E1 appears on the digital display
• Cabinet does not hold the set air temperature
• Temperature regulation is erratic or the unit will not heat correctly
• Display shows a fault instead of normal operating readout

Common causes

• Air temperature sensor (temperature probe) is defective
• Sensor wiring connection to the control is open or loose
• Control board is unable to read the sensor signal

Diagnostic steps

1. 01

   Note the code and confirm it persists

   Confirm E1 is shown on the digital display and that it remains after the unit has been allowed to operate normally.

2. 02

   Turn off power before any service

   Turn off the power switch, unplug the power cord, and allow the unit to cool before any inspection, per the manual's electric shock hazard warning.

3. 03

   Do not attempt internal repair

   The manual states this unit must be serviced by trained and qualified personnel only; service by unqualified personnel may lead to electric shock or burn.

4. 04

   Contact Hatco service

   Contact the nearest authorized Hatco service agent or Hatco directly for assistance, as the manual specifies for the E1 condition.

When to call a professional

Call a professional now. The Hatco FDWD manual instructs you to contact an authorized Hatco service agent or Hatco for the E1 condition, because diagnosing and replacing the air temperature sensor requires opening an electrically live, heated appliance. The manual is explicit that this unit must be serviced by trained and qualified personnel only, and that unqualified service may lead to electric shock or burn.