FETCO Coffee Brewer Error Code 107: Lower Liquid Level Probe
Code 107 on a FETCO XTS brewer is a lower liquid level probe error. The manual's action is to set LLC sensitivity to HIGH under MENU, GENERAL, LLC. The code does not clear by power cycling; reset it in the programming menu.
Medium: the brewer may not fill or heat properly until the lower level probe reads correctly.
- Code
- 107
- Maker
- FETCO
- Equipment
- Coffee brewers
- Applies to
- CBS-2150 XTS series (2151/2152/2152-2)
What does FETCO error code 107 mean?
The brewer watches the water level in the tank with a lower liquid level probe, and the control needs to see water around it before it allows heating. Code 107 means that probe is reporting something wrong. The manual lists several reasons: the tank is not filling, the orange wire to the temperature probe is disconnected, the water is very pure, with under 100 TDS, or the wires are reversed. It also notes that the code can occur after prefill, when the low probe is uncovered. Very pure water conducts poorly, so the probe may not detect it, which is why the manual's fix is to set the LLC sensitivity to HIGH under MENU, GENERAL, LLC. Power cycling does not erase it; the brewer holds the error until it is reset in the menu. When the cause is dealt with, use PROGRAMMING, OTHER, ERROR CODES, Display Errors, and Reset Errors. This code is separate from 103, which concerns a fouled or shorted level probe, and the manual mixes causes in the row that are not always easy to separate.
Affected models and control systems
This applies to the FETCO CBS-2151XTS, CBS-2152XTS and CBS-2152-2XTS brewers, per the User's Guide for those models. The cause cell is multi-line in the source, so treat the cause list as the guide's set of possibilities.
Code numbers and their meaning can change between control generations. We match the full model and control before acting on a code.
What you may notice
- 107 appears in the error list
- The tank does not fill, or stops filling
- The brewer stops after prefill
- Water used is filtered or treated and very pure
Possible causes
Listed in FETCO's documentation
- Tank not filling
- Orange wire to the temperature probe disconnected
- Very pure water (under 100 TDS)
- Wires reversed
Other likely causes — what usually sits behind error code 107 on this control. A technician confirms which one it is before any part is replaced.
- A water treatment system that strips minerals so far that the probe cannot sense the water
- A wire left reversed or loose after a recent service on the brewer
- The fill valve is not opening, so the lower probe never gets covered
Safe checks before calling for service
- Check that the water supply to the brewer is open and the line is not kinked.
- Note whether the water goes through a reverse osmosis or similar treatment system.
- Power cycling will not help here; errors on this brewer only clear from the menu.
- Tell the technician the code is 107 and whether anyone recently opened the brewer or changed the water treatment.
How a technician diagnoses error code 107
- Read the error list and confirm 107, not 103.
- Check the water supply and that the fill valve opens.
- Check the probe wiring order and the orange wire to the temperature probe.
- Measure the water conductivity; set LLC sensitivity to HIGH under MENU, GENERAL, LLC if the water is very pure.
- Reset errors and run a fill cycle to verify the probe sees water.
- Wiring order inside the brewer is not an operator job
- Setting LLC sensitivity needs the right menu access
- Deciding between valve, wiring and water chemistry takes testing
How error code 107 differs from similar codes
107 is the lower probe code, with water purity and wiring in its causes; 103 is the level probe fouled or shorted.
Technical reference
- Maker documentation
- FETCO owner support
- Edition
- May 2015 P129 rev 002 (also issued as October 2014 P129 rev 001)
- Models / control
- CBS-2150 XTS series (2151/2152/2152-2)
- Section
- Error Codes table, p. 13
- Checked
- October 2026
We use the maker's document to read the code and do not reproduce it. Always confirm the complete model and control before applying these steps.
Related FETCO coffee brewer error codes
Why would very pure water cause 107?
Water under 100 TDS conducts poorly, so the probe may not detect it. The manual's fix is to set LLC sensitivity to HIGH.
Where is the LLC setting?
In MENU, then GENERAL, then LLC, per the User's Guide. Set it to HIGH when the water is very pure.
Can wires being reversed cause this?
Yes, the manual lists reversed wires among the causes, which is most likely after the brewer was opened for service.
Need help with FETCO error code 107?
A technician confirms the cause on site and gives you the price in writing before any work starts.