Partlow MIC 2000 Temperature Controller
Partlow MIC 2000 Temperature Controller code Er 3: Er 3 (EPROM Checksum Failure)
A checksum test of the program memory has failed due to corrupted data, which stops the controller from operating.
- Code
- Er 3
- Name
- Er 3 (EPROM Checksum Failure)
- Controller
- Partlow MIC 2000 Temperature Controller
- Type
- General fault
- What it does
- Fault: the equipment trips and stops
- Risk
- YELLOW Booth plays by its own rules
- Reset
- Clears on its own when the condition goes away
- Source
- The manufacturer's manual (subscribers see which manual and page)
Updated July 22, 2026
How to fix it
Subscribers get:
- What to do next, in plain words
- Which manufacturer manual it comes from, linked
- The 3 common causes listed for this code
- Booking a live video call with Ben, a master booth technician ($250/hr, paid per call)
Questions about this code
What does Partlow MIC 2000 Temperature Controller code Er 3 mean?
A checksum test of the program memory has failed due to corrupted data, which stops the controller from operating.
Is Partlow MIC 2000 Temperature Controller code Er 3 dangerous?
It is graded yellow: not hard, but a booth does it differently than the gear most techs know, so follow the checks in order.
How do I fix Partlow MIC 2000 Temperature Controller code Er 3?
The manual's fix and the step by step check for this code are in WERCS Diagnose, plans from $49 a month. For help right now, WERCS answers 24/7 at (877) 489-3727.
Other Partlow MIC 2000 Temperature Controller codes
Hi · Hi (Input more than 10% Over Span)Lo · Lo (Input more than 10% Under Span)Er 4 · Er 4 (RTD Mismatch Error)SnSr · SnSr (Sensor Break or out of range)Er 11 · Er 11 (Cold Junction Compensation Error)
All 6 Partlow MIC 2000 Temperature Controller codes · Every fault code