UIT/PR PORT TRANSMISSION ERROR occurs when the communication cable or its connection is wrong, the protocol is incorrect, or transmission timing is too early. The manual's first action is: “Check the connection of the communication cable. Replace the cable if the trouble occurs after confirming the connection.”
- Model
- Sanyo Machine Works SDNR
- Display shows
- UIT/PR PORT TRANSMISSION ERROR (F4)
- Type
- Error code
- Source
- Manual p. 109
What F4 means
UIT/PR PORT TRANSMISSION ERROR p. 147
Common causes
- 1) Communication cable or its connection is wrong. p. 147
- 2) Communication protocol is incorrect. p. 147
- 3) Transmission timing is too early. p. 147
What to do
- Check the connection of the communication cable. Replace the cable if the trouble occurs after confirming the connection. p. 147
- Select a proper communication protocol. p. 147
- Delay the transmission time. p. 147
Before you service the product, read the safety instructions in the manual p. 65.
If F4 is still not resolved
The manual gives no further instruction for this code. Open the code table in the PDF or contact Sanyo Machine Works service.
This page summarises what the manufacturer’s manual says about F4; each statement links to the page it comes from, and quoted lines are copied word for word. It is not a substitute for the manual or for a qualified installer. ManualLib is not affiliated with Sanyo Machine Works. Found a mistake? Report an error.