Reznor DV Operation Manual (for units built before August 2003) - Manual (Page 23)

Form O-DV/RDF/ADF, P/N 148385, Page 22
REFERENCE: For service and troubleshooting information on the electrical controls,
refer to the manufacturer's literature covering that component. Component literature is
included in the literature envelope.
Symptom or Problem (cont’d) Cause and Remedy (cont’d)
1. Air in pilot gas line - bleed pilot line.
2. Inadequate pilot gas pressure - verify pilot gas pressure (3.5" w.c.)
3. Faulty pilot valve - replace pilot solenoid valve.
4. Faulty ignition module - replace entire module.
2. Grounding for unit or flame rod inadequate - check ground path.
3. Faulty main gas valve - replace main gas valve.
4. Faulty ignition module - replace ignition module.
5. Inadequate main gas pressure - verify main burner pressure.
1. Faulty main gas valve - replace main gas valve.
2. Inadequate timing on high fire time delay relay - adjust setting.
3. Faulty high fire time delay relay - replace time delay relay.
4. High stage relay contacts are not closed - check control setting.
5. Inadequate main gas pressure - verify main burner gas pressure.
6. Faulty high stage relay - replace relay.
7. Faulty ignition module - replace entire module.
1. Microamp signal on flame rod is inadequate - check position and
condition of flame rod and signal (minimum 0.5 microamps required.)
14. Disconnect closed; blower and burner switches in run position;
control switch is in "winter" position; "control power", high gas
normal; "low gas normal"; "firestat normal"; "system switch
energized"; "starter energized" and "freezestat normal" lights are lit;
ignitor has reached 1.4A and has opened the pilot valve bringing on the
"pilot valve normal" light; but the pilot flame is not present. (After two
trials the unit will go into safety lockout requiring cycling of the main
disconnect switch.)
15. Disconnect closed; blower and burner switches in run position;
control switch is in "winter" position; all status lights are lit except
"main valve normal" light. The pilot flame is present and stable, but the
(low stage portion or) main gas valve will not open, or rapid cycling of
the main valve is occurring.
16. Disconnect closed; blower and burner switches in run position;
control switch is in "winter" position; all status lights are lit; the pilot
flame and low fire on the main burner are present and stable, but the unit
will not progress to a high fire condition.
20. Troubleshooting (cont'd)
Chart 1 - System Troubleshooting (Check the diagnostic lights.) (cont'd)
OPERATION/SERVICE SECTION (cont'd)