Medium
15-30 minutes
This is a photocell designed for use in space heaters to detect the presence of a flame, ensuring that the burner ignites and remains lit to provide heat while preventing the release of unburned gas. This photocell is a genuine OEM part, sold individually, and is compatible with various heater models. It is typically attached to the main combustion chamber with a bracket (sold separately). Factors like dirt and debris, aging, and exposure to higher temperatures can lead to photocell failure. A failing photocell can result in your heater not starting, starting intermittently and then shutting down, and sometimes displaying error codes related to the photocell. To replace this part, you will need a screwdriver and/or socket wrench, as well as a set of pliers. Begin by disconnecting the heater from its power source and draining the fuel from the heater. Remove the top, back, and side covers of the heater to access its internal components. Locate the photocell within the heater, disconnect its cable and the photocell itself, and then install the new photocell. Reassemble your heater, ensuring that any disconnected wires are properly reconnected.
Photocell Assembly 70-016-1000
OEM part for: Pro Temp
Part Number: 70-016-1000
Ships within 1 business day 
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Repair Videos ?
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Step-by-step instructions for removing and installing the photocell on your ProTemp heater....
January 24, 2018
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Customer Part Reviews ?
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Customer Repair Instructions ?
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Heater would run for a minute, then shut off. If i removed the cover, it ran well.
Tool Type
Heater
Difficulty
Medium
Time
15-30 minutes
Tools Used
Screwdriver, Pliers
Heater would not start
Tool Type
Heater
Difficulty
Medium
Time
15-30 minutes
Tools Used
Screwdriver, Nutdriver
Replaced the original thermostat and photocell which were both 12 years old.
Tool Type
Heater
Difficulty
Easy
Time
15-30 minutes
Tools Used
Screwdriver
Unscrewed the control panel (4 screws)
Unscrewed the burner unit (three screws)
Pulled the photocell sensor out of the metal bracket as it is only friction fit
Removed photocell wire lead plug that attaches to the main control panel
Unscrewed the thermostat bracket from the inside of the cover housing
Unscrewed the thermostat from the bracket (2 screws)
Pulled two separate wire leads from thermostat
Installed new thermostat
Reverse order this process and you are done!
Heater ran 15 sec then wouldn't stay lit. Displayed E-1 code.
Tool Type
Heater
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
Screwdriver, Nutdriver
Parts Used
would shut down. threw a photocell code.
Tool Type
Heater
Difficulty
Easy
Time
30-60 minutes
Tools Used
Screwdriver, Pliers
Failed to continue operation after 1-2 minutes
Tool Type
Heater
Difficulty
Hard
Time
30-60 minutes
Tools Used
Screwdriver, soldering iron, 2.5K resistor
Parts Used
Removed covers, replaced CDS photocell, on-line information shows replacement part # -1000 was a replacement, however, was incorrect connector; CDS cell leads soldered / spliced to original connector; problem unresolved, same as with original cell;
Discovered CDS ranging resistor R12 had changed value providing a marginal out of range voltage to the RISC processor input while operating. Padded 5V B+ resistor by adding 2.5K ohms; operational voltage to RISC input lowered from 2.4V average to 2.1V average while flame active; system now operates correctly. System checked for correct shutdown when optical path blocked simulating flame out condition.
Torpedo Hester bad nozzle
Tool Type
Heater
Difficulty
Easy
Time
30-60 minutes
Tools Used
Screwdriver, Pliers, Socket set, Hammer
Not running properly, low pressure, cracked air line and deteriorated fuel line
Tool Type
Heater
Difficulty
Medium
Time
1-2 hours
Tools Used
Screwdriver, Pliers
The photocell turned out to be bad and also the thermostatic limit control switch
Tool Type
Heater
Difficulty
Easy
Time
30-60 minutes
Tools Used
Screwdriver, Socket set, Wrench Set, Nutdriver
Heater would not cycle on
Tool Type
Heater
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
Screwdriver, Pliers
Parts Used
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Our customer service team are at the ready daily to answer your part and product questions. We have a dedicated staff with decades of collective experience in helping customers just like you purchase parts to repair their products.
All our part reviews are solicited directly from other customers who have purchased this exact part. While we moderate these reviews for profanity, offensive language or personally identifiable information, these reviews are posted exactly as submitted and no alterations are made by our team.
All our customer repair instructions are solicited directly from other customers just like you who have purchased and replaced this exact part. While we moderate these reviews for profanity, offensive language or personally identifiable information, these reviews are posted exactly as submitted and no alterations are made by our team.
Based on data from past customer purchasing behaviors, these parts are most commonly purchased together along with the part you are viewing. These parts may be necessary or helpful to replace to complete your current repair.
All our installation videos are created and produced in collaboration with our in-house repair technician, Mark Sodja, who has helped millions of eReplacementParts customers over the last 13 years repair their products. Mark has years of experience in selling and repairing both commercial and residential products with a specialty in gas-powered equipment.
This data is collected from customers who submitted a repair instruction after replacing this exact part. Customers can rate how easy the repair was to complete and how long it took. We aggregate this data to provide a repair rating that allows customers to quickly determine the difficulty and time needed to perform their own repair.
