What does Keeprite E4 mean?

The IGC (Integrated Gas Control) board is displaying 4 LED flashes, indicating an open limit circuit. Either the primary high-limit switch or the flame rollout switch has opened, cutting gas heat to prevent overheating.

What does Keeprite E7 mean?

The IGC board displays 7 LED flashes to signal a limit circuit lockout. This occurs after the limit switch has opened three or more times within a single heating call, indicating a persistent overheating condition the IGC cannot self-correct.

What does Keeprite E8 mean?

The IGC board displays 8 LED flashes to signal a gas heating lockout. Unlike the 7-flash limit lockout, the E8 code does not auto-reset — the unit remains locked out until power is manually cycled.

HVAC

Keeprite error codes, decoded.

Look up any Keeprite fault code below. Each one is grounded in Keeprite's own service documentation — the meaning, the symptoms, the causes, and the steps to clear it.

By Octavian Ghindea

Co-founder & CTO · Reviewed August 2026

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Keeprite sits in our HVAC coverage. Every page here is transcribed from the manufacturer's manuals, not scraped from forums.

What error codes does Keeprite display?

Tap a code for the full breakdown — meaning, symptoms, causes, and fix steps.

/5 COM>208) 230 TRANUWOUW 白 24V RED GRN/YEL- BRN IGC -BRN- ORG SRN/YEL 8 O D1 9

TO IFM WHENUSED SEE NOTE 4/5 BRN VIO MOTOR DEHUMFAN T-STAT c5c5c5c5 - DH 分 BRN C

SECTION SECTION IGCRAN 23 c 23 LS2 21 OHH IDM 国S PRS CAP2 WSEN HCF IDM COMP 2020

. 8.DONOT DISCONNECT PLUG UNDERLOAD. 1 9. N.E.C. CLASS 2, 24V. 345755-101 REV.-

VOLTAGE OUTDOORFANMOTOR OFM CONTACTOR PTV QUADRUPLETERMINAL PRESSURE EQUALIZR VA

IFB 230 COM SEE NOTE7- RYRAN8 O 24VAC R 8F 24V IFB T'STAT USE SEENOTE8 IGC RTSAF

LOW O HIGH GAS HEATO_ EARNESS SAT 48VL50042

VOLTAGE LOWGASPRESSURESWITCH(WHENUSED) LGPS FIELDCONTROLWIRING LOWPRESSURESWITCH

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