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Smoke Alarm
User Guide
i4618AC, i4718AC, i5000AC Series
• 120 Volt Smoke Alarm with 9 Volt Battery Back-up
• Front Load Battery
• Test and Hush
!
ATTENTION: Please take a few minutes to thoroughly read
this user guide which should be saved for future reference and
passed on to any subsequent owner.
P/N: 1261-7205-00
®
Button
SIGNALING
U L
LISTED
Model: i4618AC

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Questions and answers

Christina Tischler
May 19, 2025

The green lights in the smoke alarms light up my rims an hallway like a runway, is there any way to block the light? Not good for people that are sensitive to light at night

1 comments:
Christina
May 19, 2025

@Christina Tischler ,I need to check spelling autocorrect got me again. My rooms and hallway is what that should say.

Jack
March 21, 2025

Smoke alarm chirps intermittently

User image 67ddeb4a52c2a
1 comments:
Mr. Anderson
March 21, 2025

The Firex i4618AC Series smoke alarm chirps intermittently due to a low battery warning. The alarm emits a chirping sound to indicate that the battery needs to be replaced. Additionally, the low battery warning chirp can be temporarily silenced for approximately 13 hours by pressing the Test/Hush button.

This answer is automatically generated

Liz Mikoda
March 12, 2025

I have replaced the battery, green light is on, red light flashing. but the unit will randomly chirp 3 times. doesn't seem to be at any particular time. it is connected to other units. Their batteries have all been replaced too.

User image 67d185624b302
1 comments:
Mr. Anderson
March 12, 2025

The Firex i4618AC Series unit may be chirping three times randomly after replacing the battery due to an issue with the smoke-sensing chamber. The manual states that the alarm will "chirp" if abnormal operation of the smoke-sensing chamber is detected. Ensure the battery is properly installed, and use only the specified battery types. If the issue persists, cleaning the unit or resetting it by disconnecting power and reinstalling the battery may help. If the problem continues, the unit may need replacement.

This answer is automatically generated

Julie
February 17, 2025

Can’t get the door to close 4618A

1 comments:
Mr. Anderson
May 14, 2025

If the door of a Firex i4618AC Series smoke alarm will not close, the likely cause is an improperly installed battery. The unit includes a battery lockout feature that prevents the battery door from closing unless a battery is correctly installed. To troubleshoot:

1. Remove the battery and reinsert it, ensuring correct polarity.
2. Make sure the battery is fully seated in its compartment.
3. Try closing the door again.

This feature ensures the unit will not function without a properly installed battery.

This answer is automatically generated

Susan
January 30, 2025

Why does my smoke alarm continue to chirp after replacing the battery

User image 679c08cfc63ab
1 comments:
Mr. Anderson
February 10, 2025

The Firex i4618AC Series smoke alarm chirps after replacing the battery because the low/missing battery monitor circuit remains active during battery replacement. This chirping will stop once the new battery is correctly installed. To avoid this chirp, the unit can be removed from the base and disconnected from AC power while replacing the battery, though this is not necessary.

This answer is automatically generated

Judy
June 12, 2025

Green light intermittently flashing red after 8 minutes of hush

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Summary of Contents for Firex i4618AC Series

  • Page 1 SIGNALING LISTED Smoke Alarm User Guide i4618AC, i4718AC, i5000AC Series Model: i4618AC • 120 Volt Smoke Alarm with 9 Volt Battery Back-up • Front Load Battery ® • Test and Hush Button ATTENTION: Please take a few minutes to thoroughly read this user guide which should be saved for future reference and passed on to any subsequent owner.
  • Page 2 What to do When the Alarm Sounds! Smoke Alarm Procedure NEVER IGNORE THE SOUND OF THE ALARM! Smoke alarms are designed to minimize false alarms. Cigarette smoke will not normally set off the alarm, unless the smoke is blown directly into the alarm. Combustion particles from cook- ing may set off the alarm if it is located too close to the cook- ing area.
  • Page 3 We know you expect nothing less when the lives of your family are at stake. Firex alarms and accessories CAN ONLY BE interconnected with other Kidde and FireX alarms and accessories as well as specified brands and models of interconnect compatible alarms. Connection of Firex products to a non-specified manufacturer’s interconnect system, or connection with non-specified equipment...
  • Page 4: Recommended Locations For Alarms

    WARNING! REMOVAL OF THE SMOKE ALARM BATTERY AND DISCONNECTING or LOSS OF A.C. POWER WILL RENDER THE SMOKE ALARM INOPERATIVE. ELECTRICAL RATING: 120 VAC, 60HZ, 80mA maximum per alarm (maximum 80mA for originating unit with 24 devices interconnected). 1. RECOMMENDED LOCATIONS FOR ALARMS •...
  • Page 5: Mobile Home Installation

    • Install Smoke Alarms on tray-shaped ceilings (coffered ceilings) on the highest portion of the ceiling or on the sloped portion of the ceiling within 12” (305mm) verti- cally down from the highest point (see figure 4). MOBILE HOME INSTALLATION Modern mobile homes have been designed and built to be energy efficient.
  • Page 6 • In dusty areas. Dust particles may cause nuisance alarm or failure to alarm. • In very humid areas (greater than 95% R.H.). Moisture or steam can cause nuisance alarms. • In insect-infested areas. • Smoke alarms should not be installed within 3 ft (.9m) of the following: the door to a kitchen, the door to a bathroom containing a tub or shower, forced air supply ducts used for heating or cooling, ceiling or whole house ventilating fans, or other high air flow areas.
  • Page 7 • A maximum of 24 Kidde and/or FireX devices may be interconnected in a multiple station arrangement. The interconnect system should not exceed the NFPA interconnect limit of 12 smoke alarms and/or 18 alarms total (smoke, heat, carbon monoxide, etc.). With 18 alarms interconnected, it is still possible to interconnect up to a total of 6 remote signaling devices and/or relay modules.
  • Page 8: Battery Installation

    BATTERY INSTALLATION See MAINTENANCE (Section 6) for battery installation. CAUTION! THIS UNIT WILL NOT FUNCTION WITHOUT A PROPERLY INSTALLED BATTERY, AND IS EQUIPPED WITH A BATTERY LOCKOUT FEA- TURE WHICH PREVENTS THE BATTERY DOOR FROM CLOSING IF A BAT- TERY IS NOT INSTALLED CORRECTLY. MOUNTING INSTRUCTIONS CAUTION: THIS UNIT IS SEALED.
  • Page 9 NOTE: The alarm will mount to the bracket in 4 positions (every 90 degrees). When wall mounting, make sure the battery box is at the bottom of the unit. (see Figure 5). 6. Pull the Battery Pull Tab completely out of the unit. This will automatically connect the battery.
  • Page 10: Operation And Testing

    4. OPERATION AND TESTING OPERATION: The smoke alarm is operating once A.C. power is applied, a fresh battery is installed and testing is complete. When the smoke alarm ionization chamber senses products of combustion, the horn will sound a loud (85db) tem- poral alarm until the sensing chamber is cleared of smoke particles.
  • Page 11: Nuisance Alarms

    Alarm Memory: This smoke alarm is equipped with an alarm memory, which provides a visual indication when an alarm has been activated. The red LED will illuminate for about 1.5 seconds every 16-20 seconds to indicate the memory condition. The memory will remain activated until pushing the Test/Hush Button resets it or will time-out between 11 to 13 hours.
  • Page 12: Battery Installation And Removal

    6. MAINTENANCE / TROUBLESHOOTING ALARM REMOVAL IF SMOKE ALARM TAMPER RESIST FEATURE HAS BEEN ACTIVATED, REFER TO SMOKE ALARM TAMPER RESIST FEATURE IN SECTION 3 FOR REMOVAL INSTRUCTIONS. To remove the alarm from the trim ring, rotate the alarm counter clockwise in the direction of the "OFF"...
  • Page 13: Battery Replacement

    BATTERY REPLACEMENT. Carbon-zinc type EVEREADY 1222; GOLD PEAK 1604P OR 1604S GOLDEN POWER G6F22M Alkaline type ENERGIZER 522; DURACELL MN1604 OR MX1604; GOLD PEAK 1604A PANASONIC 6AM6, 6AM-6, 6AM-6PI, 6AM6X, AND 6LR61 (GA) NOTE: Do not use lithium batteries in this unit. These batteries can be purchased at your local retailer.
  • Page 14: Good Safety Habits

    dwelling units are capable of protecting about half of the occupants in poten- tially fatal fires. Victims are often intimate with the fire, too old or young, or physically or mentally impaired such that they cannot escape even when warned early enough that escape should be possible. For these people, other strategies such as protection-in-place or assisted escape or rescue are necessary.
  • Page 15 • Have a family meeting and discuss your escape plan, showing everyone what to do in case of fire. • Determine a place outside your home where you all can meet if a fire occurs. • Familiarize everyone with the sound of the smoke alarm and train them to leave your home when they hear it.
  • Page 16: Nrc Information

    - Cleaning with flammable liquids, such as gasoline. - Fires where the victim is intimate with a flaming initiated fire; for example, when a person's clothes catch fire while cooking. - Fires where the smoke is prevented from reaching the detector due to a closed door or other obstruction.
  • Page 17: Service And Warranty

    separated by a door from the areas protected by the required smoke alarms. For this reason, it is recommended that the householder consider the use of addi- tional smoke alarms for those areas for increased protection. The additional areas include the basement, bedrooms, dining room, furnace room, utility room, and hallways not protected by the required smoke alarms.
  • Page 18 FIVE YEAR LIMITED WARRANTY (i4618AC, i4718AC Series) Kidde warrants to the original purchaser that the enclosed smoke alarm (but not the battery) will be free from defects in material and workmanship or design under normal use and service for a period of five years from the date of purchase. The obligation of Kidde under this warranty is limited to repairing or replacing the smoke alarm or any part which we find to be defective in material, workmanship or design, free of charge to the customer, upon sending the smoke alarm with proof of date of purchase,...
  • Page 19 TEN YEAR LIMITED WARRANTY (i5000AC Series) Kidde warrants to the original purchaser that the enclosed smoke alarm (but not the battery) will be free from defects in material and workmanship or design under normal use and service for a period of ten years from the date of purchase. The obligation of Kidde under this warranty is limited to repairing or replacing the smoke alarm or any part which we find to be defective in material, workmanship or design, free of charge to the customer, upon sending the smoke alarm with proof of date of purchase,...

This manual is also suitable for:

I4718ac seriesI5000ac series

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