Vevor CY knob LCD: single-digit fault numbers
Updated
Vevor's CY manual documents two knob LCDs that show a bare fault digit, and their tables differ from each other as well as from every E-code table. Work out which of the two you have from its keys before you look a number up.
Is this your controller?
Also called: Vevor knob controller, plateau-key controller
An LCD with a knob button on Vevor CY-5001, CY-5002 and CY-5004 heaters. One version has a knob plus an oil pump key and a plateau (altitude) key; the other has a single knob button. Faults appear as a bare digit with no E.
How it shows a fault: A single digit. The two versions number their faults differently: on the knob-with-keys version 3 is the fuel pump and 4 the glow plug; on the single-knob version 2 is the fuel pump and 3 the glow plug.
Reported on: Vevor CY-5001, Vevor CY-5002, Vevor CY-5004.
Not a match? See the other controller families.
At a glance
| Fault display | A bare digit (1 to 9) with no E, on a Vevor knob LCD |
|---|---|
| Codes documented | 2, 3, 4, 5, 6, 7, 8, 9, 1 |
| Settings menu | Single-knob version: hold the knob 3 s while shut down to step through voltage, temperature, manual pumping and remote items |
| Remote pairing | Not documented in our sources |
Error codes on this controller
| Code | Controller | Manual or brand | Meaning | Stated limit |
|---|---|---|---|---|
| 1 | Vevor CY knob LCD | Vevor CY, single-knob LCD Manual | Power supply voltage out of range Manual's remedy: Check the battery or generator; check whether the fuse is aged. | Normal range: 24 V controller 18-32 V; 12 V controller 9-16 V |
| 2 | Vevor CY knob LCD | Vevor CY, knob LCD with pump and plateau keys Manual | Power supply voltage out of range Manual's remedy: Check whether the battery or generator is normal. | Normal range: 24 V controller 18-32 V; 12 V controller 9-16 V |
| 2 | Vevor CY knob LCD | Vevor CY, single-knob LCD Manual | Oil (fuel) pump failure Manual's remedy: Check pump wire and connector for damage, looseness, oxidation, short or open circuit. | Not stated |
| 3 | Vevor CY knob LCD | Vevor CY, knob LCD with pump and plateau keys Manual | Oil (fuel) pump failure Manual's remedy: Check pump connections and connectors for damage or looseness. | Not stated |
| 3 | Vevor CY knob LCD | Vevor CY, single-knob LCD Manual | Ignition plug malfunction Manual's remedy: Check whether the plug is damaged and whether its connector is loose/oxidised or the wire is short/open. | Not stated |
| 4 | Vevor CY knob LCD | Vevor CY, knob LCD with pump and plateau keys Manual | Ignition plug failure Manual's remedy: Check whether the ignition plug connector is loose. | Not stated |
| 4 | Vevor CY knob LCD | Vevor CY, single-knob LCD Manual | Fan failure Manual's remedy: Check whether the impeller is stuck; connector loose or oxidised; magnet-to-Hall-sensor gap too large or magnet installed reversed; short/open circuit or motor coil leakage. | Not stated |
| 5 | Vevor CY knob LCD | Vevor CY, knob LCD with pump and plateau keys Manual | Fan failure Manual's remedy: Check whether the impeller is stuck; check whether the connector is loose. | Not stated |
| 5 | Vevor CY knob LCD | Vevor CY, single-knob LCD Manual | High temperature alarm Manual's remedy: Check the heating duct is clear; fan operates normally; temperature sensor normal. | Air inlet above 50 C; enclosure above 230 C |
| 6 | Vevor CY knob LCD | Vevor CY, knob LCD with pump and plateau keys Manual | Sensor failure Manual's remedy: Check whether temperature sensor wires/connectors are damaged or loose and whether the sensor is damaged. | Not stated |
| 6 | Vevor CY knob LCD | Vevor CY, single-knob LCD Manual | Flameout alarm Manual's remedy: Check for fuel shortage, frozen fuel circuit or stuck pump; check combustion intake and exhaust ducts; check the casing temperature sensor is in full contact with the casing. | Not stated |
| 7 | Vevor CY knob LCD | Vevor CY, knob LCD with pump and plateau keys Manual | Unsuccessful startup Manual's remedy: 1) Shell temperature too high. 2) Lots of white smoke: check fan, filter beside the ignition plug, combustion intake/exhaust passages, ignition plug ageing. 3) Little or no white smoke: check fuel shortage, frozen fuel line, blocked pump, damaged ignition plug, loose housing temperature sensor. | Shell too hot to be cooled within 3 minutes after starting (cause 1) |
| 7 | Vevor CY knob LCD | Vevor CY, single-knob LCD Manual | Unsuccessful startup Manual's remedy: 1) Casing too hot and not cooled after 3 minutes of start-up. 2) Lots of white smoke in exhaust: check the filter screen next to the ignition plug (clean/replace), whether the pump sprays fuel forcefully, whether the ignition plug is aged. 3) Little or no white smoke: check for fuel shortage, frozen or blocked fuel circuit, pump stuck/damaged, combustion intake and exhaust clear, ignition plug damaged, inner fan-wheel clearance too large. 4) Ignites normally but still reports ignition failure: check the casing temperature sensor is in full contact with the casing, its pressure spring, and the sensor itself. | Casing cannot be cooled after 3 minutes of start-up (cause 1) |
| 8 | Vevor CY knob LCD | Vevor CY, knob LCD with pump and plateau keys Manual | High temperature alarm Manual's remedy: Check the heating duct is unobstructed; check the fan works properly. | Intake above 50 C; casing above 200 C |
| 8 | Vevor CY knob LCD | Vevor CY, single-knob LCD Manual | Sensor failure Manual's remedy: Check whether the temperature sensor wire/connector is damaged or loose and whether the sensor is damaged. | Not stated |
| 9 | Vevor CY knob LCD | Vevor CY, knob LCD with pump and plateau keys Manual | Flameout alarm Manual's remedy: Check for fuel shortage, frozen fuel line, jammed pump; check the fan works properly. | Not stated |
Procedures on this controller
Prime the fuel line (version with oil pump key) Manual
With the heater shut down, long-press the oil pump key for two seconds to pump manually; release to stop.
Stop when fuel reaches the heater.
Plateau (high-altitude) mode (version with plateau key) Manual
Long-press the plateau key for 2 s to enter plateau mode, which leans the mixture for thin air. Long-press again for 2 s to leave it.
Known quirks
- The same manual also covers two LCD panels that show E-2 to E-10 and an LED-bar dial that flashes its faults. One heater model number can ship with any of the five.
- The high temperature alarm limit is casing above 200 °C on the knob-with-keys version and above 230 °C on the single-knob version.
Pages that apply to this controller
- Reset a locked-out heater
- White smoke and no start
- Shuts down or low power
- Controller screen is blank
- Altitude tuning
- Hidden settings menu
- Soot build-up and the clean burn
- Manual fuel priming
- Pairing the remote
- Lithium, power stations and voltage errors
- Cleaning the glow plug and its screen
- All error codes in one table
Sources
Everything on this page is compiled from the documents and discussions below. We summarise them in our own words; follow the links for the originals.
- Vevor diesel heater manual, CY-5001 / CY-5002 / CY-5004 (PDF copy) (xlrzbfnheqpszgtyhdkh.supabase.co)