{"product_id":"goodman-b1370735-furnace-fan-time-delay-relay-24v-coil-120v-no","title":"Goodman | B1370735 | Furnace Fan Time Delay Relay | 24V Coil | 120V NO","description":"\u003ch1\u003eGoodman B1370735 Furnace Fan Time Delay Relay - 24V Coil - 120V NO\u003cbr\u003e\n\u003c\/h1\u003e\n\u003cp\u003e\u003cbr\u003eThe Goodman B1370738 is a genuine OEM replacement fan time delay relay (TDR) specifically engineered for Goodman GMS8, GDS8, and GMT series gas furnaces. This specialized component acts as the sequencing bridge between the thermostat's call for heat and the high-voltage blower motor circuit. Unlike universal sequencers, this relay is calibrated to the precise millisecond delay required to allow the heat exchanger to reach optimal temperature before airflow begins, preventing the circulation of cold air into the living space. It is the factory-authorized solution for systems utilizing standalone fan control rather than integrated circuit boards.\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003cbr\u003e\n\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGenuine OEM Part #B1370738: \u003c\/strong\u003eThis is the direct factory-spec replacement for the B13707-38, ensuring correct timing sequences for Goodman and Amana air handlers.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptimized Delay Calibration:\u003c\/strong\u003e Engineered with a specific \"on-delay\" to maximize heat exchanger efficiency and an \"off-delay\" to purge residual heat after the burner shuts down.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFixes Blower Failures: \u003c\/strong\u003eSpecifically designed to resolve issues where the indoor fan fails to energize during the heating cycle or stays running indefinitely due to stuck internal contacts.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThermal Protection Legacy:\u003c\/strong\u003e Replaces older B13707 series relays with upgraded internal thermal elements that resist \"drifting\" timing issues common in high-heat environments.\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eProduct Details\u003cbr\u003e\n\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand: \u003c\/strong\u003eGoodman \/ Amana\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Daikin Comfort Technologies\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart #:\u003c\/strong\u003e B1370738\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC\/SKU: \u003c\/strong\u003e193031101720\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShipping Weight:\u003c\/strong\u003e 0.3 lbs\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoil Voltage:\u003c\/strong\u003e 24 VAC\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eContact Voltage:\u003c\/strong\u003e 120 VAC \/ 240 VAC\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTerminals:\u003c\/strong\u003e 1\/4\" Male Quick-Connect\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e🛠️ HVAC Depot Pro Tip\u003cbr\u003e\n\u003c\/h2\u003e\n\u003cp\u003eTake a Picture First: The B1370738 uses a mix of low-voltage (24V) and line-voltage (120V) connections. Photograph the wire colors on the NC\/NO terminals before removal to prevent a short circuit that could blow the transformer. Diagnostic Check: If your furnace burners light but the fan never kicks on, jump the \"R\" to the \"G\" terminal at the thermostat; if the fan still doesn't start but you hear the relay click, the internal contacts of the B1370738 are likely pitted and need replacement.\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003eCross-Reference\u003cbr\u003e\n\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSuperseded:\u003c\/strong\u003e B13707-38, B13707-38S, B1370735\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLegacy:\u003c\/strong\u003e 12S20, 12S22, 120-21332-402\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrawing Numbers:\u003c\/strong\u003e Z-B13707-38, 40665-001\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhite-Rodgers\/Emerson Equivalents:\u003c\/strong\u003e 50A55 series (replaces standalone TDR functionality) or White-Rodgers 90-340 relay series.\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eModel Compatibility\u003cbr\u003e\n\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGMS8 \u003c\/strong\u003e(Suffixes: 0403AX, 0703AX, 0904BX, 1155CX)\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eGDS8 (Suffixes: 0403AX, 0703AX, 0804BX, 1005CX)\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eGMT (Suffixes: 0453AX, 0704BX, 0905CX, 1155DX)\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGMN0\u003c\/strong\u003e (Suffixes: 0603AX, 0804BX, 1005CX)\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eARUF \u003c\/strong\u003e(Suffixes: 182416, 303016, 364216)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HVAC Depot","offers":[{"title":"Default Title","offer_id":52676957602155,"sku":"B1370738","price":32.43,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0922\/9683\/9531\/files\/B1370738-1_96705ef1-8a31-41b5-909f-024256609f24.jpg?v=1768587266","url":"https:\/\/tophvacparts.com\/products\/goodman-b1370735-furnace-fan-time-delay-relay-24v-coil-120v-no","provider":"HVAC Parts and Equipment Depot Open To Homeowners and Contractors","version":"1.0","type":"link"}