Heater Board Pin Out - Friedrich VRP Series Service & Parts Manual

Heater Board Pin Out

Heater
Element
L1 Out
L1 in
1. Check for 12 vdc between VCC 1 and ground.
2.Check for line voltage at L1 and L2, reversing valve L1 and L2,
3. With demand for electric heat on check for voltage at L1 and L2 out.
102
COMPONENTS TESTING
L2 Heater
Element Out
Figure 618 (Heater Board)
L2 In
12VDC+ in
12 VDC- in
L1 in
Reversing Valve
L1
Reversing Valve
L2
L2 in