If the bike is working with Battery, Replace with alkaline batteries, and clean very well the spring with special electronic cleaner contacts, you can buy in any electronic stores.
2) Tight the connector well, and clean with cleaner contacts.
3) See if the small motor inside is working good, or the wires is faulty , and repair or replace.
LUBE very well the bike, follow the instruction manual steps.
Blessing.
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How to Lubricate an Elliptical Fitness Exercise Equipment
This link will take you to the owner's manual for the 3800RC
http://www.sportsmith.net/images/product_support%5Cstairmaster%5CManuals%5C3400CE_3800RC%20Momentum%20Manual.pdf
and this link will take you to the parts available for that model:
Stairmaster 3800 RC Momentum Recumbent Bike Parts SPORTSMITH net
Display reads CONFIG RQRD or NTM CONFIG RQD on Stairmaster Equipment
Probable Cause
The message CONFIG RQRD or NTM CONFIG RQD appears when the console needs to be configured for the machine type it is installed. This message is common when the console has been replaced or if the settings have been changed. Message is commonly seen on various Stairmaster equipment such as bike models 3000CE, 3300CE, 3400CE, 3600RC, 3800RC and 3900RC; stepper models 4400PT, 4600PT, 4400CL, 4600CL and SC916; stepmill models 7000PT and SM916; elliptical model ClubStride 5100.
Corrective Action
Make sure the unit is in an "idle" state. "Idle" state means the console is not displaying an error or any message that requires data input. The display should basically be freshly powered up, scrolling the EKG or welcome message
Configure the console for the proper machine type by pressing Level UP, 80, ENTER
Using the Level UP or Level DOWN keys, scroll through to the proper machine type (Bike, Elliptical, Stairclimber or Stepmill)
Once the proper machine type is shown on the display select the machine type by pressing ENTER
This completes the steps necessary when your Stairmasterdisplay readsCONFIG RQRD or NTM CONFIG RQD
Display reads CONFIG RQRD or NTM CONFIG RQD on Stairmaster Equipment
Probable Cause
The message CONFIG RQRD or NTM CONFIG RQD appears when the console needs to be configured for the machine type it is installed. This message is common when the console has been replaced or if the settings have been changed. Message is commonly seen on various Stairmaster equipment such as bike models 3000CE, 3300CE, 3400CE, 3600RC, 3800RC and 3900RC; stepper models 4400PT, 4600PT, 4400CL, 4600CL and SC916; stepmill models 7000PT and SM916; elliptical model ClubStride 5100.
Corrective Action
Make sure the unit is in an "idle" state. "Idle" state means the console is not displaying an error or any message that requires data input. The display should basically be freshly powered up, scrolling the EKG or welcome message
Configure the console for the proper machine type by pressing Level UP, 80, ENTER
Using the Level UP or Level DOWN keys, scroll through to the proper machine type (Bike, Elliptical, Stairclimber or Stepmill)
Once the proper machine type is shown on the display select the machine type by pressing ENTER
This completes the steps necessary when your Stairmasterdisplay readsCONFIG RQRD or NTM CONFIG RQD
Here is a link for the manual for the 3800RC
http://www.sportsmith.net/images/product_support%5Cstairmaster%5CManuals%5C3400CE_3800RC%20Momentum%20Manual.pdf
Here is a link to the manual for the 3800RC
http://www.sportsmith.net/images/product_support%5Cstairmaster%5CManuals%5C3400CE_3800RC%20Momentum%20Manual.pdf
If you have not already done so, start with checking the battery voltage. It should be at least 6 volts DC. Check the link attached for instructions on how to properly check the voltage on a battery. Video about How to Test Battery
first plug the unit in with the adapter, then try ,if all ok then let battery charge 24 hrs if it does not run after you unplug it check all wiring connections .if all ok then have alternator checked
