Benchmark H5000-H, Operation Manual, Page: 18 / 19

Chapter 5: Failure analysis and troubleshooting
Failure analysis and processing procedures
No. Symptom Possible Causes Action
1
No display when
powered up.
No power Check the power
Fuse failure
Exchange fuse （ 250V 3.0A
5X20mm ）
Broken switch Replace the switch
Others Call for service
2
The actual and
displayed
temperatures are
significantly different.
Temperature sensor failure Call for service
3
“OPEN” in the
temperature display
with a short beep Temperature sensor failure
or the environmental
temperature is below zero
Call for service
4
“SHORT” in the
temperature display
with a shirt beep Temperature sensor failure
or the environmental
temperature is below zero
Call for service
5 No heating or cooling
Broken sensor or Broken TE
module
Call for service
6
No reaction when a
key is pressed
Failed film switch Call for service