Environmental Express MicroBloc - Manual (Page 20)

800.745.8218 / 843.576.1147 / www.environmentalexpress.com Environmental Express • 18
HotBlock: Operation and Instruction Manual Troubleshooting
Troubleshooting
Problem Possible Cause Solution
Temperature Controller Display Blank
Red Lighted Rocker Switch not lit
Unit turned off Turn on Red Lighted Rocker Switch
Unit unplugged or no power to unit Plug unit into 120 VAC/20A outlet
Main fuse blown Replace 15A/250V fuse
Internal failure Call for service
Red Lighted Rocker Switch lit Units with S/N 2056 and below
High Temp Switch tripped Reset High Temp Switch
Green Pilot Light not lit High Temp Switch tripped Reset High Temp Switch
Units with S/N 2057 and above
heater turned off Turn on Black Rocker Switch
Internal failure Call for service
Unit does not heat to operating
temperature
Green Pilot Light lit See above
Process Temperature not set Set correct operating temperature
High Temp Switch tripped Reset High Temp Switch
Units with s/n 2057 and above
heater turned off Turn on Black Rocker Switch
High Temp Switch failure Call for service
High Temp Switch trips Block temperature above Set operating temperature to
repeatedly safe range 190°C or below
High Temp Switch failure Call for service
Block temperature exceeds set
value by more than 1°C
Internal failure Call for service
Temperature Controller
displays error message
Refer to Controller Manual