Riello RS/E BLU Burner Control (REC 27.100A2 with RDI21 display)
Riello RS/E BLU Burner Control (REC 27.100A2 with RDI21 display) No Comm
The burner control box lost communication with the display, preventing the operator from monitoring the system.
- Code
- No Comm
- Name
- No Comm
- Controller
- Riello RS/E BLU Burner Control (REC 27.100A2 with RDI21 display)
- Type
- Setup or parameter 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 23, 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 Riello RS/E BLU Burner Control (REC 27.100A2 with RDI21 display) No Comm mean?
The burner control box lost communication with the display, preventing the operator from monitoring the system.
Is Riello RS/E BLU Burner Control (REC 27.100A2 with RDI21 display) No Comm 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 Riello RS/E BLU Burner Control (REC 27.100A2 with RDI21 display) No Comm?
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 Riello RS/E BLU Burner Control (REC 27.100A2 with RDI21 display) codes
c: 85 · c: 85 (with d: 0 / d: 1)c: 93 · c: 93 (with d: 3)c: 95 · c: 95 (with d: 3/4/5/6)c: 96 · c: 96 (with d: 3/4/5/6)c: 50 to 58 · c: 50 to c: 58c: 86 / c: 87 · c: 86 (fuel servomotor) / c: 87 (air ser
All 24 Riello RS/E BLU Burner Control (REC 27.100A2 with RDI21 display) codes · Every fault code