FF Error CodeUpdated 4 days ago

Introduction

The "FF" error code indicates a high-pressure switch disconnection. This article is for Vertex Ducted Central Split (DYC-18) systems. 

Troubleshooting

Cause: The high-pressure switch is continuously in the disconnected state. 

• Begin by checking if the pressure switch is securely plugged in. 
• Use a jump cap or metal short-circuit to connect the high-pressure switch port of the electronic control board, then turn off the power and restart the machine. Observe whether the fault disappears. 
• If the fault is resolved, replace the pressure switch. 
• If the fault is not resolved, replace the main control board. 

Note: The high-pressure switch port can be short-circuited by using a screw clamped between two pins.