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Vestar AC Error Codes & Troubleshooting Guide [All Models]
Vestar AC showing an error code? Find what E1, F2, EC, P4 and other codes mean, plus quick DIY fixes and when to call a technician. All Vestar AC series covered.
Vestar AC error codes appear on your indoor unit display to flag a specific fault, such as sensor errors, communication faults, fan problems, or refrigerant leaks. Codes like E1, F2, EC, and P4 are not random. Each one points to a particular part of the system that needs attention.
Vestar makes several AC types, including non-inverter split, inverter split, floor standing, and cassette models. Error codes vary depending on the series and model you own. This guide gives you an instant code lookup table, shows which errors you can safely check yourself, and explains which ones call for a professional technician.
Vestar AC Error Code Finder
Type your error code below to see what it means and the quick fix to try.
Vestar AC Error Code List
| Code | Meaning | Action |
|---|---|---|
| F1 | Room temp sensor fault | DIY-safe |
| F2 | Indoor coil sensor fault | DIY-safe |
| F3 | Outdoor coil sensor fault | DIY-safe |
| F4 | PG fan motor error | DIY-safe |
| E1 | EEPROM parameter error | Call technician |
| E2 | Zero crossing detection error | Call technician |
| E3 | Fan speed out of control | DIY-safe |
| E5 | Room temp sensor fault | DIY-safe |
| E6 | Evaporator coil sensor fault | DIY-safe |
| EC | Refrigerant leakage detected | Call technician |
| E0 | EEPROM error | Call technician |
| E2 | Zero crossing error | Call technician |
| E3 | Indoor fan speed error | DIY-safe |
| E4 | Room temp sensor fault | DIY-safe |
| E5 | Evaporator sensor fault | DIY-safe |
| E7 | Indoor PCB communication error | Call technician |
| EC | Refrigerant leakage | Call technician |
| E1 | Room temp sensor open/short | DIY-safe |
| E2 | Coil temp sensor open/short | DIY-safe |
| E5 / H6 | Indoor fan motor fault | DIY-safe |
| dF | Defrost mode/error | DIY-safe |
| EC | Refrigerant leakage | Call technician |
| E1 | Indoor temp sensor fault | DIY-safe |
| E2 | Indoor pipe sensor fault | DIY-safe |
| E6 | Indoor fan motor malfunction | DIY-safe |
| P4 | Indoor evaporator over-temp | Call technician |
| P5 | Outdoor condenser over-temp | Call technician |
| P9 | Anti-cold wind / defrost | DIY-safe |
| E1 | T1 sensor fault | DIY-safe |
| E2 | T2 sensor fault | DIY-safe |
| E3 | T3 sensor fault | DIY-safe |
| E6 | Outdoor unit malfunction | Call technician |
| HS | Defrost mode | DIY-safe |
| P0 | Indoor/display PCB comm failure | Call technician |
| E2 | T1 room sensor fault | DIY-safe |
| E3 | T2 coil sensor fault | DIY-safe |
| E4 | T3 sensor fault | DIY-safe |
| E7 | EEPROM / indoor PCB fault | Call technician |
| E8 | Water level alarm / drain fault | Call technician |
| E0 | Indoor/outdoor comm fault | Call technician |
| E1 | Communication error | Call technician |
| EP | Compressor overheating | Call technician |
| EU | Voltage sensor fault | Call technician |
| EA | Current sensor fault | Call technician |
| E3 | Outdoor heat exchanger sensor fault | DIY-safe |
| E4 | Temperature sensor fault | DIY-safe |
| E5 | Temperature sensor fault | DIY-safe |
| E6 | Temperature sensor fault | DIY-safe |
| E7 | Outdoor temp sensor fault | DIY-safe |
| E8 | Exhaust temp sensor fault | DIY-safe |
| F1 | Temperature sensor fault | DIY-safe |
| F2 | Temperature sensor fault | DIY-safe |
| F3 | Temperature sensor fault | DIY-safe |
| F5 | Indoor fan motor fault | DIY-safe |
| P0 | IPM voltage abnormal | Call technician |
| P1 | Over/under voltage protection | Call technician |
| P4 | Compressor drive error | Call technician |
| EF | Outdoor DC fan feedback error | DIY-safe |
| E1 | Room temp sensor fault | DIY-safe |
| E2 | Indoor pipe sensor fault | DIY-safe |
| EE | Indoor PCB EEPROM fault | Call technician |
| E4 | Refrigerant shortage | Call technician |
| E6 | Indoor fan motor fault | DIY-safe |
| E9 (P9) | Drive abnormal protection | Call technician |
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Understanding Vestar AC error code types: how to read your code
Vestar ACs use two error code formats. Most indoor units show digital display codes, like E1, F2, EC, or P4. Some outdoor units instead use LED blink patterns, where the number of flashes points to a specific fault.
This guide covers error codes across these Vestar AC types:
- Non-Inverter Split AC (F-Series)
- Split AC (E-Series)
- Split AC (AF7 Series)
- Split AC (AMH/AMT Series)
- Split AC (X5H Series)
- Floor Standing AC
- Cassette AC
- Inverter Split AC
- Older Split Models (BK/DQ/HT Series)
The same code can mean different things across series. For example, E1 is a sensor fault on some models but a communication error on others. Always confirm your exact model before troubleshooting.
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Vestar non-inverter split AC (F-Series) error codes
This series covers Vestar’s non-inverter split AC line, sold under the following model numbers:
- VASYA125QDFH
- VASYA185QDFH
- VASYA225QDFH
- VASYA123KFH
- VASYA183KFH
- VASYA223KFH
- VSI183OPTD1
| Error code | Problem | What to check | Recommended solution |
|---|---|---|---|
| F1 | Room temperature sensor fault | Indoor temperature sensor | Check wiring or replace sensor |
| F2 | Indoor coil temperature sensor fault | Evaporator sensor | Replace sensor |
| F3 | Outdoor coil temperature sensor fault | Outdoor sensor | Replace sensor |
| F4 | PG motor error | Indoor fan motor or main PCB | Repair fan motor or replace PCB |
Most F-Series faults trace back to a sensor or the indoor fan motor. Once wiring is confirmed intact, a professional check is usually needed to replace the faulty part.
Vestar split AC (E-Series) error codes
The E-Series covers these Vestar split AC models:
- VASYB125ABGT
- VASYB185ABGT
- VSN123DF8T
- VSN183DF8T
- VSN183BF8T
- VASN123BF8T
| Error code | Meaning | Likely cause |
|---|---|---|
| E1 | EEPROM parameter error | Indoor PCB memory fault |
| E2 | Zero crossing detection error | Power supply or PCB problem |
| E3 | Indoor fan speed out of control | Faulty fan motor or blocked blower |
| E5 | Room temperature sensor fault | T1 sensor open/short |
| E6 | Evaporator coil sensor fault | T2 sensor open/short |
| EC | Refrigerant leakage detected | Low refrigerant or gas leak |
If your unit shows EC, stop using the AC right away. This code points to a refrigerant leak, and only a trained technician can safely detect and fix it. Contact us for a sameday AC gas refilling in Kolkata.
Vestar split AC (AF7 Series) error codes
The AF7 Series applies to these Vestar models:
- VASYA123AF7T
- VASYA183AF7T
| Error code | Meaning | Recommended check |
|---|---|---|
| E0 | EEPROM error | Indoor PCB |
| E2 | Zero crossing error | Voltage, earthing, wiring |
| E3 | Indoor fan speed error | Fan motor, capacitor, blower |
| E4 | Room temperature sensor fault | T1 sensor |
| E5 | Evaporator sensor fault | T2 sensor |
| E7 | Indoor PCB communication error | PCB wiring |
| EC | Refrigerant leakage | Check gas pressure and leaks |
Vestar split AC (AMH/AMT Series) error codes
The AMH/AMT Series covers these Vestar models:
- VASKR182AMH
- VASKR222AMT
- VASKR123AMT
- VASKR183AMT
| Error code | Meaning |
|---|---|
| E1 | Room temperature sensor open/short |
| E2 | Coil temperature sensor open/short |
| E5 / H6 | Indoor fan motor fault |
| dF | Defrost mode/error |
| EC | Refrigerant leakage |
Note that “dF” often just means the unit is running a normal defrost cycle, not necessarily a fault.
Vestar split AC (X5H Series) error codes
The X5H Series covers these Vestar models:
- VASKR182IFH
- VASKR123X5H
- VASKR183X5H
| Error code | Meaning |
|---|---|
| E1 | Indoor temperature sensor fault |
| E2 | Indoor pipe temperature sensor fault |
| E6 | Indoor fan motor malfunction |
Vestar Floor Standing AC error codes (indoor + outdoor LED faults)
Vestar’s floor standing AC line covers these models:
- VAFSYA242XS4T
- VAFSYA482XS4H
These units use two separate code systems: digital indoor error codes and outdoor LED flash patterns.
Indoor error codes
| Code | Meaning |
|---|---|
| P4 | Indoor evaporator over-temperature protection |
| P5 | Outdoor condenser over-temperature protection |
| P9 | Anti-cold wind / Defrost |
| E1 | T1 temperature sensor fault |
| E2 | T2 temperature sensor fault |
| E3 | T3 temperature sensor fault |
| E6 | Outdoor unit malfunction |
| HS | Defrost mode |
| P0 | Communication failure between indoor PCB and display PCB |
Outdoor LED faults
| LED pattern | Meaning |
|---|---|
| LED1 Flash | Phase sequence error |
| LED1 Flash | Missing Phase A/B |
| All OFF | Missing Phase C |
| LED1 + LED2 Flash | Low pressure protection |
| LED3 Flash | Over-current protection |
| LED2 + LED3 Flash | T3 sensor fault |
| LED2 Flash | T4/T5 sensor or high-pressure protection |
| All LEDs Flash | Condenser high temperature protection |
Reading outdoor LED codes takes care. The same “LED1 Flash” pattern can point to two different faults depending on timing and flash count. If you are unsure which fault applies to your unit, confirm with a technician before troubleshooting further.
Vestar Cassette AC error codes (indoor + outdoor LED faults)
Cassette AC units display faults through indoor error codes and outdoor LED blink patterns.
Indoor error codes
| Error code | Meaning |
|---|---|
| E2 | T1 room temperature sensor fault |
| E3 | T2 coil sensor fault |
| E4 | T3 sensor fault |
| E7 | EEPROM / Indoor PCB fault |
| E8 | Water level alarm / Float switch / Drain pump fault |
Outdoor LED errors
| LED pattern | Meaning |
|---|---|
| LED1 Flash | Phase imbalance |
| LED1 Flash | Missing Phase A/B |
| All OFF | Missing Phase C |
| LED1 + LED2 Flash | Low pressure protection |
| LED3 Flash | Over-current / Poor earthing |
| LED2 + LED3 Flash | T3 sensor fault |
| LED2 Flash | High pressure / T4/T5 sensor fault |
| All LEDs Flash | Condenser high temperature |
E8 is a common issue, and you can often check it yourself by clearing any blockage in the drain line before calling for service.
Vestar Inverter Split AC error codes
Inverter models group faults into four categories: communication, sensors, fan motor, and compressor or power issues.
Communication & PCB errors
| Error code | Meaning | Possible cause |
|---|---|---|
| E0 | Indoor/Outdoor communication fault | Wiring, PCB |
| E1 | Communication error | Signal wiring or outdoor PCB |
| EP | Compressor overheating | Compressor or refrigerant issue |
| EU | Voltage sensor fault | IPM, capacitor or PCB |
| EA | Current sensor fault | PCB or IPM |
Temperature sensor errors
| Error code | Meaning |
|---|---|
| E3 | Outdoor heat exchanger sensor fault |
| E4 | Temperature sensor fault |
| E5 | Temperature sensor fault |
| E6 | Temperature sensor fault |
| E7 | Outdoor temperature sensor fault |
| E8 | Exhaust temperature sensor fault |
| F1 | Temperature sensor fault |
| F2 | Temperature sensor fault |
| F3 | Temperature sensor fault |
Fan motor errors
| Error code | Meaning |
|---|---|
| E3 | Indoor fan speed out of control |
| F5 | Indoor fan motor fault |
E3 shows up in both the sensor and fan-error groups depending on the model, so check your unit’s context before assuming the cause.
Compressor & power errors
| Error code | Meaning | Possible cause |
|---|---|---|
| P0 | IPM voltage abnormal | IPM module, PCB |
| P1 | Over-voltage / Under-voltage protection | Power supply, refrigerant issue, PCB |
| P4 | Compressor drive error | IPM, IGBT module |
Avoid resetting the compressor or power codes (EP, P0, P1, P4) repeatedly, as this can strain the compressor further. Call a technician instead of retrying power cycles on these faults.
Older Vestar split AC models (BK/DQ/HT Series) error codes
These legacy Vestar models are older, but many are still running in homes today. If you own one of these units, use this table to identify your error code.
| Error code | Meaning |
|---|---|
| EF | Outdoor DC fan feedback error |
| E1 | Indoor room temperature sensor fault |
| E2 | Indoor pipe sensor fault |
| EE | Indoor PCB EEPROM fault |
| E4 | Refrigerant shortage |
| E6 | Indoor fan motor fault |
| E9 (P9) | Drive abnormal (Voltage/Current/IPM/Compressor protection) |
Which Vestar AC errors you can fix yourself vs when to call a technician
Not every error code needs a technician right away. Use this table to decide your next step based on the type of error you see.
| Error type | What you can try | When to call a technician |
|---|---|---|
| Temperature sensor errors (E1, E2, E4, E5, F1–F3) | Turn off power for 5 minutes, then restart | If the error returns after reset |
| Fan motor errors (E3, E6, F4, F5) | Clear airflow blockage, clean filters | If the fan doesn’t spin at all |
| Communication errors (E0, E1, P0) | Restart the unit, visually check wiring | If the error persists after restart |
| Refrigerant leak (EC) | Nothing, stop using the AC | Immediately, for leak detection and recharge |
| Power/compressor errors (P1, P4, EU, EA, EP) | Verify stable voltage, restart once | If the error repeats |
Never repeatedly force-restart a compressor or power-related error. Doing so raises the risk of overheating, component damage, or fire.
Wrapping Up
Vestar AC error codes generally fall into four categories: sensor faults, fan motor issues, communication or PCB errors, and refrigerant or power problems. Most sensor and fan codes clear up with a simple power reset or a quick filter and airflow check. Codes tied to refrigerant leaks or compressor and power faults are different. These need a trained technician, since repeated resets can cause further damage.
Before calling for service, note down your exact model number and the error code shown on the display. This small step helps a technician diagnose the issue faster and get your AC running again. For professional AC repair in Kolkata, Urban Service Plaza offers doorstep service for these kinds of issues.
