Rheem · Furnace

13 Flame lost

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

What the control is telling you

Flame was proven and then lost during the heat call. On 802P/R95P, 5 losses in one call cause a 1-hour lockout (10 and 13 alternate).

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

Likely causes

Dirty flame sensor
Low or fluctuating gas pressure
Pressure switch dropping out (wind, blocked vent, water in hoses, long vent)
Poor ground or reversed polarity
Flame not carrying across all burners
R95P: limit circuit opening

Test and repair steps

Clean the flame sensor and check its wire to the IFC.
Check gas supply and manifold pressure under full fire.
Check whether a pressure switch opens during the run: hoses, water/moisture, vent blockage or length, high wind, blocked heat exchanger.
Check L1/neutral polarity and ground.
Confirm all burners light and stay lit.
R95P check the limit circuit for opening.
Lockouts clear when the fault is fixed and power is cycled; a soft lockout can also be cleared by removing the heat call for more than 2 but less than 20 seconds.

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

10 One-hour lockout
11 Failed ignition
12 Low flame sense
14 Unexpected flame
20 Twinning fault
22 Main limit open
23 HALC limit open (HALC LIMIT OPEN)
26 Line and neutral reversed

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Source: 802P: 92-24161-146-02, Diagnostics and Fault Codes table, p.40-41, 51; R95P: Diagnostics and Fault Codes table, p.87 (PDF p.91); RGPE/RGLE: Table 16 p.49 / Table 20; Fig. 45 p.63. 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.