Steel-Line remotes: start with the opener's model
The Door Hero is not connected with Steel-Line or Steel-Line Automation. Every step here comes from their own coding sheets and user guides, and names the opener it belongs to.
Steel-Line's technical support page sends owners after motor or handset help to Steel-Line Automation's site, which carries owner manuals for the SD1000 and RD1000 openers and for Marantec openers. The buttons vary a great deal between models: one opener wants P and +, another LEARN, others CODE or RADIO SET. Match the model on your opener to its section before you press anything.
For the Multi Drive 1500 Pro, or any model not named on this page, check the manual for your model. How coding works across every make is in how to program a garage door remote.
SD1000 Pro sectional opener
Short press CODE
Steel-Line Automation's SD1000 Pro user guide says a dot then shows in the corner of the display.
Press the remote button, then the same button again
Use the button you want for this door both times.
Watch for the flashing dot
The guide says the dot flashes when the remote has been learned. This opener stores 50 codes.
RD1000 opener
Steel-Line Automation's RD1000 user guide keeps it short. Click CODE, then press the same remote button two or three times, until the two dots flash quickly and the courtesy light flashes. By default the RD1000 holds 50 remotes.
SD800, SD1200, SPRINT800 and Mustang
Hold P and + together
Steel-Line's handset coding sheet says to keep both down until all the lights are on and LED 7 flashes.
Press + once
Just once, then go straight to the remote.
Press the remote button twice, quickly
Two fast presses of the button you want to use.
Press P to save
The sheet says LED 3 then comes on. The SD800 keeps a maximum of 10 codes and deletes the oldest when it is full; Steel-Line says some earlier models keep 6.
RD800 roller door opener
On the RD800, Steel-Line's sheet says to press LEARN once: the LED lights and the opener beeps 3 times. Press the remote button once within 10 seconds and the LEDs go off. Hearing 2 beeps instead means that remote was stored already.
The RD800 takes a maximum of 15 codes. Once it is full, the sheet's answer is to clear them all and code back the remotes you use.
Older OL4, OL6 and RD9 openers, sometimes sold as Boss
Steel-Line's HT3 coding sheet says its OL4 and OL6 openers may also carry the Boss name, and its HT4/WB13 sheet adds that they may be branded Guardian. The HT4 product page describes a two button keyring remote for OL6, RD9 and OL4 openers made before July 2013, supplied with 1 battery fitted. That product page and the HT4 coding sheet give different frequencies, so we give none here.
OL4. Press RADIO SET for 1 to 2 seconds. The courtesy light flashes once and stays on for 30 seconds, and while it is on you press the remote button until the light flashes twice.
OL6. Press RADIO SET for 1 to 2 seconds, and the OK LED stays on with one beep. Then press the remote button: the OK LED goes off and the opener beeps twice.
RD9 roller door opener. The HT4/WB13 sheet calls it the Boss RD9 and gives it a SET button. Press and release SET so the OK LED flashes twice and a 30 second window opens, then press the remote button. The OK LED flashes once and the opener beeps twice.
Openers sold under those other names have their own pages: Boss remotes and Guardian remotes.
Marantec Comfort openers from Steel-Line
Steel-Line also sells Marantec Comfort sectional openers. For the Comfort 270, 280 and 380, Steel-Line Automation's Marantec coding sheet works from the grey MASTER transmitter: link it to the new remote with the coding connector, hold the MASTER button until its LED lights, then hold the new remote's button until its LED flashes and then stays lit.
The same sheet warns that if a transmitter is reset, the opener then has to be reprogrammed.
Steel-Line garage door reset: clearing every code, by model
| How to clear all codes | What the sheet says about memory | |
|---|---|---|
| SD1000 Pro | Long press CODE until a letter shows | Clears all remotes but not paired wireless accessories; stores 50 codes |
| RD1000 | Long press CODE | Holds 50 remotes by default |
| SD800 | Hold P and +, then hold minus until LED 7 goes off and flashes again, then press P | Up to 10 codes; the oldest goes when it is full |
| RD800 | Hold LEARN for 7 seconds: 3 beeps, then 2 beeps, then one long beep | Clears remotes, wireless wall buttons and keypads together; up to 15 codes |
| OL4 | Hold RADIO SET for 5 seconds: the courtesy light flashes 7 times | Clears remotes, wireless wall buttons and wireless keypads |
| OL6 | Hold RADIO SET for 8 seconds: the OK light flashes 3 times | Clears all remotes |
| RD9 | Hold SET for 7 seconds: the OK LED flashes twice and it beeps twice | Clears all remotes |
Steel-Line garage door opener reset after a power cut
Not every reset means clearing codes. Steel-Line's 2015 article on a door that won't open starts with the wall keypad, which shows whether the fault lies with the door or the remote. Next comes a reset at the power source: off, a 10 second wait, then on again.
Its opener FAQ says a door with electronic limits should reset itself even after a power failure, so if it still won't fully open or close, something else is wrong. Most openers have no battery backup, Steel-Line adds, which means they stop while the power is out or the circuit breaker has tripped. An opener that trips the breaker again once it is reset is faulty and needs repair or replacement.
A dead remote, or a Steel-Line garage door repair?
Steel-Line's FAQ sets out the order of checks when a remote does nothing. Try a second remote or the wall button. If neither handset works, code the handsets again; if only one has stopped, give it new batteries.
When the motor runs but the door stays put, the FAQ looks at the safety beams first, checking that they line up and that their wires are undamaged, then at whether the door was left in manual mode after a power failure. Beyond those two it is a repair: see garage door opener repairs.
Two signals are about servicing rather than remotes. Steel-Line's roller door FAQ says a flickering light on the control box means a pre-set number of openings and closings has been reached and the unit needs a service. The SD1000 Pro has an optional maintenance alarm, off by default, which flashes the LED 10 times and can be set to 2,000, 3,000, 4,000 or 5,000 cycles.
Remote batteries and a moving door
Steel-Line Automation's SD1000 Pro guide warns that a swallowed CR2032 remote battery can cause fatal injuries within 2 hours, and says to check the red indicator after a new one goes in. Steel-Line's sectional door manual says remotes belong out of children's reach and that nobody should stand, walk or drive under a moving door. Try each newly coded remote from a spot where the whole door is in view.
What to tell the door specialist
- The opener's model, read off the unit (SD1000 Pro, RD800, OL6 and so on)
- Whether the remote is a keyring or a larger handset, and any model printed on it
- What the lights, beeps or display did when you tried to code it
- Whether a wireless wall button or keypad needs coding as well
- Whether the control box light is flickering or a maintenance alarm is flashing
What you can do, and what to leave
You can
- Code a remote with the sheet for your model
- Clear all codes when a remote is lost, then code back the rest
- Reset at the power source the way Steel-Line describes
Leave to a door specialist
- An opener that trips the breaker again after a reset
- A motor that runs but won't move the door once the beams and manual mode are checked
- Spring tension or cables on the door itself
What we would do
Count your remotes before you add one to an SD800. It holds 10 codes and drops the oldest to make room, so coding an eleventh can quietly knock out a remote that someone uses every day. If the count is close, clear the memory and code back only the remotes your household actually carries.