Knob LCD heater controller (Hcalory HC-A01): codes
Updated
This panel shows two-digit E codes like the common LCD, but the numbers are assigned differently. E-01 means the heater failed to start, not low voltage; E-03 is the voltage fault; E-08 is the glow plug. The fault table is from the Hcalory HC-A01 manual. The A-2209 control switch sheet describes a panel with the same keys and the same menus, and is treated here as the same family; the two have not been compared side by side.
Is this your controller?
Also called: A-2209, Bluetooth control switch, one-knob LCD
A landscape colour LCD with, at its right-hand end, a small Set key on top, a round knob that both turns and presses, and a power key below. A pump key with a fuel-tank icon sits at the lower left. Unlike the screenless rotary controller, this one has a full display and shows E-xx codes.
How it shows a fault: E-01 to E-10 on screen, in a different order from the common LCD: E-01 is start-up failure, E-02 is flame-out from lack of fuel and E-03 is abnormal voltage. The last fault is also stored at item En01 of the query menu.
Reported on: Hcalory HC-A01, Likaci Bluetooth heaters, sold loose as the A-2209 Bluetooth control switch.
Not a match? See the other controller families.
At a glance
| Fault display | E-01 … E-10 on a colour LCD with one push-turn knob |
|---|---|
| Codes documented | E-01, E-02, E-03, E-04, E-05, E-06, E-07, E-08, E-09, E-10 |
| Settings menu | Hold Set 3 s for settings F0 to F9; hold Set and power 3 s for query items En00 onward |
| Remote pairing | Query item En08 (rte): hold the knob 3 s, then press the remote keys as P1 to P4 appear |
Error codes on this controller
| Code | Controller | Manual or brand | Meaning | Stated limit |
|---|---|---|---|---|
| E-01 | Knob LCD (Hcalory HC-A01) | Hcalory HC-A01 Manual | Start-up failure Manual's remedy: Check whether the fuel pump is working; check whether the fuel circuit fittings are waxed up or blocked. | Not stated |
| E-02 | Knob LCD (Hcalory HC-A01) | Hcalory HC-A01 Manual | Lack of oil (fuel) and stalling Manual's remedy: Check the fuel tank for lack of fuel. | Not stated |
| E-03 | Knob LCD (Hcalory HC-A01) | Hcalory HC-A01 Manual | Abnormal voltage Manual's remedy: Check the heater's supply voltage type matches the vehicle; check the voltage limits; check the main harness connector is not loose. | 24 V version: not higher than 32 V or lower than 18 V; 12 V version: not higher than 18 V or lower than 9 V |
| E-04 | Knob LCD (Hcalory HC-A01) | Hcalory HC-A01 Manual | Air outlet temperature sensor failure Manual's remedy: Check whether the outlet air temperature sensor connector is loose; outlet sensor failed - replace the main board; main board failure - replace. | Not stated |
| E-05 | Knob LCD (Hcalory HC-A01) | Hcalory HC-A01 Manual | Inlet air temperature sensor failure Manual's remedy: Inlet air sensor failure - replace the main board. | Not stated |
| E-06 | Knob LCD (Hcalory HC-A01) | Hcalory HC-A01 Manual | Oil (fuel) pump abnormality Manual's remedy: Check the pump plug for loose connection; check the main wiring harness for disconnection; pump failure - replace. | Not stated |
| E-07 | Knob LCD (Hcalory HC-A01) | Hcalory HC-A01 Manual | Fan abnormality Manual's remedy: Check whether the fan impeller is jammed; fan plug loose; fan failure - replace; fan-wheel induction magnet missing or wrong polarity; main-board wind speed sensor; main board failure - replace. | Not stated |
| E-08 | Knob LCD (Hcalory HC-A01) | Hcalory HC-A01 Manual | Ignition plug abnormality Manual's remedy: Check the ignition plug connection; faulty plug - replace; main board failure - replace. | Not stated |
| E-09 | Knob LCD (Hcalory HC-A01) | Hcalory HC-A01 Manual | High temperature protection Manual's remedy: Incorrect or faulty furnace temperature sensor type - replace the sensor; main board failure - replace. | Not stated |
| E-10 | Knob LCD (Hcalory HC-A01) | Hcalory HC-A01 Manual | Furnace temperature sensor abnormal Manual's remedy: Check the furnace temperature sensor connector for a loose connection; incorrect or faulty sensor type - replace; main board failure - replace. | Not stated |
Procedures on this controller
Open the basic settings Manual
Hold Set for 3 s. Turn the knob to choose an item, press to edit, press again to confirm, and hold Set for 3 s to save. Items run from F0 (clock) to F9 (automatic start and stop), and include tank size and pump size.
Open the query menu Manual
With the unit on, hold Set and power together for 3 s. En00 is the board version, En01 the fault code, En02 the case temperature, En03 the voltage, En06 the altitude, En08 remote matching and En09 Bluetooth matching.
Pair the remote Manual
Go to query item En08, which shows rte, and hold the knob for 3 s. The screen asks for P1 to P4 in turn: press plus, minus, mode and on/off on the remote in that order.
Prime the fuel line Manual
Only during the power-on self-test: hold the pump key (fuel-tank icon, lower left) until - P - shows, then release. A 300-second countdown runs the pump and exits by itself. It cannot be started once the self-test has finished.
Stop when fuel reaches the heater. Over-priming floods the burner.
Known quirks
- Missing the short power-up window is the usual reason priming seems not to work on this panel.
- The phone app is airHeaterBle, the same app Vevor's XMZ manual names.
- The menu and pairing steps on this page are taken from the A-2209 sheet and the HC-A01 manual notes together. If a step does not behave as described, go by the paperwork that came with your heater.
Pages that apply to this controller
- Hcalory error codes
- 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.