---
title: "TCL AC Error Codes: Complete Troubleshooting Guide for Pakistan"
description: "If your TCL Inverter AC stops cooling and shows a code such as **E1** or **E2** on the indoor panel, it is telling you exactly what is wrong. This is the complete **TCL AC error code list** for Pakistan, with…"
url: "https://www.aysonline.pk/docs/tcl-ac-error-codes-pakistan/"
updated: "2026-07-27"
category: Air conditioning
---

# TCL AC Error Codes: Complete Troubleshooting Guide for Pakistan

If your TCL Inverter AC stops cooling and shows a code such as **E1** or **E2** on the indoor panel, it is telling you exactly what is wrong. This is the complete **TCL AC error code list** for Pakistan, with the likely cause and what to do about each one.

  Most common TCL codes **E0** is a communication fault between the indoor and outdoor units — usually wiring. **E1** and **E2** are temperature sensor faults. **E4** normally means low gas. Any **P** code is the unit protecting itself, most often from voltage problems.   Before you start Switch the unit off and isolate it at the breaker before checking anything. Sensor, board and refrigerant faults need a qualified technician — opening a unit yourself can void the warranty and is dangerous with capacitors still charged.

## TCL AC Error Codes: Full List

| Code | Likely cause | What to do |
| --- | --- | --- |
| **E0** | Communication error — indoor and outdoor units not talking | Check the interconnecting wiring between the units, then restart the AC. |
| **E1** | Room temperature sensor fault | The sensor measuring room heat is loose or broken. Needs replacement. |
| **E2** | Indoor pipe / coil sensor fault | The sensor on the indoor copper coil has failed. Technician required. |
| **E3** | Outdoor pipe / condenser sensor fault | Sensor fault in the outdoor unit. |
| **E4** | System abnormality — refrigerant or gas issue | Usually low gas from a leak, or a blockage in the pipework. |
| **E5** | Model configuration error | Normally a PCB issue where the board settings are mismatched. |
| **E6** | Indoor fan motor fault | The blower fan is jammed or the motor has failed. |
| **E9** | Outdoor inverter module issue | Fault on the main outdoor PCB (IPM board). |

## TCL “P” Protection Codes

A **P** code is not a breakdown — it means the AC has shut itself down to avoid damage. Fix the underlying condition and the code clears.

| Code | Meaning | What to check |
| --- | --- | --- |
| **P0** | Module overheating | The outdoor unit is too hot or too dirty. Clear debris and check ventilation. |
| **P1** | Voltage too high or too low | Check your stabiliser and incoming supply voltage. |
| **P2** | Over-current protection | The compressor is drawing too much power. Technician. |
| **P4** | Compressor discharge temperature too high | Usually poor airflow, low gas, or a dirty condenser. |

## Fixing the most common TCL faults

### E1 and E2 sensor errors

Both are temperature sensor faults — E1 on the room sensor, E2 on the indoor coil sensor. A sensor is a small thermistor on a two-wire lead. The usual causes are a connector that has worked loose at the indoor board, or a sensor that has drifted out of tolerance. Reset the unit first in case the reading was a one-off; if the code returns, the sensor needs testing and replacing, which is a technician job.

### E0 communication error

The indoor and outdoor units have stopped talking to each other. In Pakistan this is very often the interconnecting cable — a loose terminal, corrosion, or damage where the cable passes through the wall. Isolate the power, check both terminal blocks are tight and clean, then restore power.

### E4 — low gas or blockage

E4 flags a system abnormality, and in practice it is usually refrigerant. If the unit is blowing air that is only slightly cool and the outdoor pipe is not getting cold, suspect a leak. Topping up without finding the leak is money wasted — it will simply vent again.

### How to reset a TCL AC

A reset clears temporary faults — communication glitches, a one-off protection trip, or a code left on screen after the cause has gone. It will not fix a genuine hardware fault, but it is always the first thing to try and costs nothing.

1. Switch the unit off with the remote and wait a few seconds.
2. **Turn the AC off at the circuit breaker or unplug it.**
3. Leave it isolated for **5 to 10 minutes** so the control board fully discharges.
4. Restore power and switch the unit on with the remote.
5. If the same code returns immediately, it is a real fault — note the code and call a technician.

### Which codes you can clear yourself, and which need a technician

| Type of fault | Can you fix it? | What to do |
| --- | --- | --- |
| Communication error between indoor and outdoor unit | Sometimes | Reset first. If it returns, the interconnecting cable or a board is at fault — technician. |
| Voltage or over-current protection | Often | Check your stabiliser and supply voltage. Repeated trips mean an electrical problem, not an AC problem. |
| Dirty filter or blocked outdoor unit | Yes | Clean the filters and clear debris and vegetation from around the outdoor unit. |
| Sensor fault (room, coil or outdoor sensor) | No | The sensor needs testing and replacing. Technician. |
| Refrigerant or gas-related fault | No | Usually a leak. Needs pressure testing and recharging by a technician. |
| Compressor, inverter module or PCB fault | No | Board-level repair. Do not attempt this yourself. |

### Frequently Asked Questions

  What does E1 mean on a TCL AC? E1 indicates a room temperature sensor fault — the sensor that measures the air temperature in the room is loose, disconnected or has failed. Reset the unit first; if the code returns, the sensor needs replacing by a technician.   What does E4 mean on a TCL inverter AC? E4 is a system abnormality, most often caused by low refrigerant from a leak, or a blockage in the pipework. If cooling is weak as well, a leak is the likely cause and it needs a technician to test and recharge.   What does a P1 code mean on a TCL AC? P1 is voltage protection — the incoming supply is either too high or too low, and the unit has shut down to protect itself. Check your stabiliser and supply voltage before calling anyone.   How do I reset a TCL air conditioner? Switch it off at the remote, then isolate it at the circuit breaker for 5 to 10 minutes so the control board discharges fully. Restore power and switch on again. If the code reappears immediately, it is a genuine fault.   Do TCL error codes mean the AC is broken? Not always. E codes usually point to a component fault such as a sensor or fan motor. P codes are protection trips — the unit is defending itself from a voltage or temperature problem, and it will run normally once the underlying condition is fixed.

[Browse TCL Air Conditioners](https://www.aysonline.pk/tcl-ac/)

Prices updated daily · 100% original with official warranty · zero down payment installments