Rheem · Furnace

93 Internal control fault

Critical severity Rheem/Ruud 802P / 80MDP 80% two-stage furnace (UT 1028-928 IFC)R95PRGPE/RGLE

What the control is telling you

Internal furnace control fault. 802P/R95P: hard lockout - internal fault, or voltage on the gas valve contacts (welded relay) that does not clear when the inducer cycles; cycling the heat call will not reset it. RGPE/RGLE: CONTROL FLT, Call For Service. 802P manual lists 93 in the flowchart but not the main fault table.

Applies to: 802P/80MDP (802PA050-150); R95P (R95PA040-115); RGPE/RGLE 2-stage 80+

Likely causes

IFC internal failure
Gas valve relay welded
Miswiring feeding voltage to the gas valve circuit

Test and repair steps

Warning: If flame is present or gas will not shut off with no call, close the manual gas valve first.
Cycle power and see if the fault returns.
Check wiring, ground and connections before condemning the IFC - most failures are not the IFC.
RGPE/RGLE when replacing the IFC, move the original memory card to J15 of the new control.
Replace the IFC if the fault persists.

Settings for these units

Clearance to combustibles (all models) · R95P

Location	Minimum clearance
Left side	0 in.
Right side	0 in.
Back	0 in.
Top	1 in.
Front	2 in.
Vent	0 in.
Service (front)	24 in. recommended

Same values for R95PA040 through 115.

Column order read from a rotated drawing header - confirm on the furnace clearance label.

Filter sizes as shipped, upflow (Table 19) · RGPE/RGLE

Cabinet width	Input	Bottom filter	Side filter	Quantity
17-1/2 in.	50, 75 (000 Btu/h)	15-3/4 x 25 in.	15-3/4 x 25 in.	1
21 in.	75, 100 (000 Btu/h)	19-1/4 x 25 in.	15-3/4 x 25 in.	1
24-1/2 in.	125 (000 Btu/h)	22-3/4 x 25 in.	15-3/4 x 25 in.	1

Use one filter location only - do not double-filter or filter the supply side.

21 in./100K: cut 3-1/2 in. off filter and frame for a side filter; 24-1/2 in./125K: cut 7 in.

Reduced clearance to combustibles, upflow/horizontal (Fig. 4) · Rheem/Ruud 802P / 80MDP 80% two-stage furnace (UT 1028-928 IFC)
Reduced clearance to combustibles (Fig. 3 and 4) · RGPE/RGLE

Models that show this code

21 models in Rheem/Ruud 802P / 80MDP 80% two-stage furnace (UT 1028-928 IFC), R95P, RGPE/RGLE

R802PA050314MSAR802PA075417MSAR802PA100521MSAR802PA125524MSAR802PA150524MSAR95PA0401317MSAR95PA0601317MSAR95PA0701317MSAR95PA0851521MSAR95PA1001521MSAR95PA1151524MSARGLE-05(-)BMKRRGLE-07(-)AMKRRGLE-07(-)BRQRRGLE-10(-)BRMRRGLE-12(-)ARMRRGPE-05(-)BMKRRGPE-07(-)AMKRRGPE-07(-)BRQRRGPE-10(-)BRMRRGPE-12(-)ARMR

Other codes on the same units

61 Blower fault - blower not running
66 Blower overspeed (BLOWER OVRSPEED)
68 No blower communication (NO BLWR COMM)
82 Supply air sensor fault (SA SENSOR FLT)
d1 No shared data (NO SHARED DATA)
d4 Memory card invalid (MEM CARD INVALD)
d5 Card/hardware conflict (CARD-HRD CNFLCT)
d6 Blower HP conflict (BLWR HP CNFLCT)

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Source: 802P: 92-24161-146-02, Lockout / Diagnostics Flowchart, p.41, 51; R95P: Lockout section, p.88 (PDF p.92); RGPE/RGLE: Table 16 p.49 / Table 20. Summarized in our own words; check the original manual for your model.

Homeowner looking at this code? See what it means for you and when to call a technician.

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.