Friedrich VRP Series Service & Parts Manual

99 PB
COMPONENT TESTING
Check RS-485 ConverterBoard
1. Check for 12vdc vdc coming in from power supply board.
2. Check for V+ and V‑ signals going to Driver Board.
Figure 615 (RS-485 Board)
12 VDC + In
12 VDC- In
V+ to Driver Board
V- To driver Board

Friedrich VRP Series Specifications

General

Brand	Friedrich
Model	VRP Series
Category	Heat Pump
Language	English