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.

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By Octavian Ghindea

Co-founder & CTO · Reviewed July 2026

What error codes does Keeprite display?

/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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