Pitco SELVRF User Manual

BEFORE SERVICING, REFER TO PAGE 3 AND 4 OF THIS DOCUMENT FOR IMPORTANT NOTICES
13 L22-405
COMPONENT TROUBLESHOOTING (CONTINUED)
DC Power Supply:
The DC power supply has a built in overload protecon circuit. If a short or over amp condion is detected, the DC power supply will
stop outpung DC power unl the short or over amp condion is resolved. To verify operaon of the DC power supply:
1. Turn the appliance o. Verify the AC and DC fuses are good.
2. Open the front panel and locate the DC power supply. On dual units, this is located on the right side unit.
3. Check the output of the controller for DC voltage with a mulmeter set to DC. Acceptable reading is 23.5VDC-24.5VDC.
Element (HTR1, HTR2 on Schemac):
To check the operaon of each secon of the element:
1. Turn the controller o. Disconnect the electrical supply.
2. Open the door and remove the entrance box covers.
3. Note the locaon of the element wires on the contactors and then remove the element wires from the contactors.
4. Using a mulmeter set to ohms, check the following wires for resistance on each element. Acceptable reading is 14Ω -
15Ω.
a. Wire 1 to wire 4
b. Wire 2 to wire 5
c. Wire 3 to wire 6
5. Reconnect the element wires to the contactors.
6. Reconnect the electrical supply. Turn the appliance on and allow to start heang.
7. Using a clamp meter, check the amp draw on each leg of the incoming power. Each leg should read close to the amp
rang on the rang plate aached to the door.
8. Turn the appliance o and disconnect the electrical supply.
9. Reassemble the entrance box covers. Reconnect the electrical supply and verify operaon.
Safety (Side On) Contactor (K10 on Schemac):
To check the operaon of the safety (side on) contactor:
1. Turn the controller o. Disconnect the electrical supply.
2. Open the door and remove the entrance box covers.
3. Note the locaon of the contactor coil wires and the remove the wires from the contactor coil.
4. Using a mulmeter set to ohms, check the resistance between the contactor coil contacts. Acceptable reading is 6Ω-
7Ω.
5. Reconnect the contactor coil wires. Then reconnect the electrical supply.
6. Turn the controller on and check for voltage across the contactor coil contacts. A steady 24VAC - 28VAC should be
present and the contactor should be pulled in.
7. Turn the controller o and disconnect the electrical supply.
8. Reassemble the entrance box covers. Reconnect the electrical supply and verify operaon.
Cycling (Heat Demand) Contactor (K11 on Schemac):
To check the operaon of the cycling (heat demand) contactor:
1. Turn the controller o. Disconnect the electrical supply.
2. Open the door and remove the entrance box covers.
3. Note the locaon of the contactor coil wires and the remove the wires from the contactor coil.
4. Using a mulmeter set to ohms, check the resistance between the contactor coil contacts. Acceptable reading is 3Ω-
4Ω.
5. Reconnect the contactor coil wires. Then reconnect the electrical supply.
6. Turn the controller on and check for voltage across the contactor coil contacts. A steady 24VAC - 28VAC should be
present and the contactor should be pulled in when the controller is calling for heat.
7. Turn the controller o and disconnect the electrical supply.
8. Reassemble the entrance box covers. Reconnect the electrical supply and verify operaon.

Pitco SELVRF Specifications

General

Brand	Pitco
Model	SELVRF
Category	Desktop
Language	English