Photo Cell For Ready Heater

Photo Cell For Ready Heater

The 040-166 photo cell is a high-quality aftermarket replacement photocell assembly used in compatible Ready Heater / Reddy and Remington forced-air heaters. It’s designed to sense flame during operation so the heater can run safely and shut down properly if flame isn’t detected—because “spray fuel and hope” is not a safety system.

Country of Origin
Varies by production batch

Key Features / Specifications

• Model / Part Number: 040-166
• Product Type: Replacement photo cell (photocell) assembly
• Aftermarket Replacement For: Desa M16656-24; Stens 040-166
• Function: Flame-sensing component used for safe operation and shutdown control
• Compatibility Notes: Aftermarket part that fits multiple brands/models; verify your heater model before ordering

Fits / Replaces On

• Reddy / Ready Heater Models: R110A, R110B, R110BT, R110C, R110CT, R110D, R110DT, R115, R115C, R115DR, R115T, R150E, R155A, R155B, R155C, R155D, R165A, R165AT, R165CT, R165DT, R200A, R200AT, R200B, R200BT, R40, R40T, R50BT, R55B, R55BT, R55BTA, R55C, R55CT, R60, R60A, R60H, R70DT
• Remington Models: B110A, B110B, B110BT, B115, B115DT, B115T, B155CT, B155T, B165A, B165AT, B165CT, B165DT, B200AT, B200BT, B50A, B55, B55BT, B55BTA, B55CT, B70DT, B70ET

Ideal For

• Replacing a faulty or failed photocell in compatible Ready Heater / Reddy / Remington forced-air heaters
• Fixing symptoms like shutdown after ignition, no-run safety lockout, or inconsistent flame sensing
• Maintenance where matching Desa M16656-24 or Stens 040-166 replacements is required
• Anyone who prefers their heater to run safely instead of “starting strong and quitting dramatically”