HVACopediaKeepRite furnace error codes
13 codes with causes and test steps, plus 1 settings tables.
| Code | Meaning | Severity |
|---|---|---|
| 1+2 | Blower running after power-up (normal) | Low |
| 2 | Pressure switch stuck closed (did not open) | Medium |
| 3 | Pressure switch did not close or reopened | High |
| 4 | Limit or rollout circuit open | High |
| 5 | Flame sensed with gas valve off | Critical |
| 6 | Flame not proved during ignition trial | High |
| 6+1 | Ignition lockout after 4 failed tries | High |
| 7 | Limit circuit lockout | High |
| 8 | Gas heating lockout - manual reset needed | Critical |
| 9 | High-heat pressure switch or relay did not close or reopened | High |
| 10 | Line voltage polarity reversed | Medium |
| LED off | Status LED dark - no power to the control or blown 3 A fuse | High |
| LED steady ON | Status LED on solid - control lockout (resets after 1 hour) | High |
Settings and specs
Filter size by casing width
Filters · KeepRite (F/G)96VTN Two-Stage Variable-Speed Furnace
| Casing width (in.) | Side return filter | Bottom return filter | Type |
|---|---|---|---|
| 14-3/16 | 16 x 25 x 3/4 in. | 14 x 25 x 3/4 in. | Washable |
| 17-1/2 | 16 x 25 x 3/4 in. | 16 x 25 x 3/4 in. | Washable |
| 21 | 16 x 25 x 3/4 in. | 20 x 25 x 3/4 in. | Washable |
| 24-1/2 | 16 x 25 x 3/4 in. | 24 x 25 x 3/4 in. | Washable |
- Aim for filter pressure drop under 0.2 in. w.c. (best under 0.1).
- Never run without a filter.
Source: KeepRite_ICP_F_G_96VTN_KeepRite_G96VTN_Tempstar_Heil_Arcoaire_installation_440_01_4801_00.txt - section Table 6 Air Filter Selection
Models covered
G96VTN0401410G96VTN0401712G96VTN0601412G96VTN0601714G96VTN0801716G96VTN0802120G96VTN1002120G96VTN1002122G96VTN1202422G9MXE0401410AG9MXE0401714AG9MXE0601412AG9MXE0601714AG9MXE0801716AG9MXE0802120AG9MXE1002120AG9MXE1202422AG9MXT0401410AG9MXT0401712AG9MXT0601412AG9MXT0601714AG9MXT0801716AG9MXT0802120AG9MXT1002120AG9MXT1202422A
For licensed technicians. Gas, electrical and refrigerant work must be done by a qualified, licensed person. Shut off power and gas before servicing, never bypass a safety control, and follow the manufacturer’s manual for the exact model; it and local codes always take priority. HVACopedia is not affiliated with any manufacturer; brand and model names only identify the equipment.