Specification

76 Customer Service: 252.522.3031

Troubleshooting

Basic Tests:

1. Using your meter, check voltage between L1 and ground.

You should have 120 volts all the time. If you do not have 120

volts all the time, your wiring is wrong or your breaker is off.

2. Using your meter, check voltage between T1 and T2. You

should have 120 volts (oil) or 24 volts (gas) when there is a

call for heat. If you do not have the appropriate voltage when

there is a call for heat, your wiring is wrong or your primary

control is faulty.

3. Using your meter, check voltage between T2 and T3. You

should have 120 volts (oil) or 24 volts (gas) when the power

venter is running and there is a call for heat. If you do not

have the appropriate voltage when the power venter is

running and there is a call for heat, the pressure switch is not

closing or is defective: perform the pressure switch adjustment

procedure; if the switch will not close, check the sensing tube

and tube connections.

Includes trouble shooting

for the following:

CKs

PVG

PVO

CAS

Always

120VAC

When Venter Running

120VAC

When Venter Running

0 Volts

120V (oil) or 24V (Gas)

When Call For Heat And

Venter Running

120V (oil) or 24V (Gas)

When Call For Heat

Red

Black

CK-63 Only

CK-63 Wiring Check-Out Sheet Standard Set-up

Wiring Diagrams

CK’s, PVG, PVO, CAS