Samsung DVM S VRF Aircon E151 Error Code: What It Means

What does Samsung E151 mean?

Samsung DVM S VRF E151 is listed as error due to opened EEV of indoor unit (2nd detection), indoor electronic expansion valve remained open on second detection, and electronic expansion valve failed to open in DVM S ODU service manual (2018), DVM S2 service manual (2024), Samsung AJ***TN1DKH WindFree 1-way cassette, and Samsung DVM ERV Plus source rows. The loaded row is source-backed by official diagnostic material. Do not collapse this code across model families; use the model, series, or system type to choose the right row. Confirm the exact model, series, or signal row before accepting a parts quote.

Choose the matching source row

The same visible code has more than one source-backed meaning. Match the model family, system type, or reporting unit before approving parts.

Code, what it means, and what to check first
Code	What it means	What to check first
DVM S ODU service manual (2018) / DVM S2 service manual (2024)	Error due to opened EEV of indoor unit (2nd detection)	Match this row to the installed model or reporting unit, then use the source-specific checks below.
Samsung AJ***TN1DKH WindFree 1-way cassette	Indoor electronic expansion valve remained open on second detection	Match this row to the installed model or reporting unit, then use the source-specific checks below.
Samsung DVM ERV Plus	Electronic expansion valve failed to open	Match this row to the installed model or reporting unit, then use the source-specific checks below.

Code
DVM S ODU service manual (2018) / DVM S2 service manual (2024)
What it means
Error due to opened EEV of indoor unit (2nd detection)
What to check first
Match this row to the installed model or reporting unit, then use the source-specific checks below.
Code
Samsung AJ***TN1DKH WindFree 1-way cassette
What it means
Indoor electronic expansion valve remained open on second detection
What to check first
Match this row to the installed model or reporting unit, then use the source-specific checks below.
Code
Samsung DVM ERV Plus
What it means
Electronic expansion valve failed to open
What to check first
Match this row to the installed model or reporting unit, then use the source-specific checks below.

What to do now

Use these steps to record evidence and match the installed model to its service manual before diagnosis or a repair quote.

Record E151 and match the service manual
Record E151 and stop there; the source table gives no customer reset procedure. Arrange diagnosis with the matching service manual.
No manufacturer reset steps listed for E151
Capture the complete E151 error code and model stickers first. The source table lists the meaning but no customer reset procedure; do not treat a generic power-cycle as manufacturer guidance.
Send these to us
E151 error code, a clear display photo, Samsung DVM S VRF indoor and outdoor model stickers, the controller, gateway, or unit that reported the code, operating mode and affected area, and any power or setting changes made after the code appeared

Source-specific guidance

These diagnostic-reference notes help match the code to the exact model. Electrical, refrigerant, wiring, resistance, and component checks are technician work, not DIY steps.

Source-specific guidance
Source detail	What it says
Singapore / model note	Official Samsung DVM S outdoor-unit service-manual row from AC-00076E (2018). It is not claimed as a DVM S2 or every-model Samsung VRF code. Confirm the installed model, reporting address, and matching manual before diagnosis or parts replacement.
Singapore / model note	Samsung-authored DVM S2 service-manual row from AC-00294E_2 (June 2024), retrieved from a public document mirror. Confirm the installed outdoor model, connected indoor family, regional suffix, and matching locally supplied manual before diagnosis or parts replacement.
Singapore / model note	Official Samsung regional AJ***TN1DKH WindFree 1-way cassette installation-manual row. Confirm the exact indoor and outdoor family before using this interpretation; the Malaysia support source does not establish exact Singapore supply.

Source detail
Singapore / model note
What it says
Official Samsung DVM S outdoor-unit service-manual row from AC-00076E (2018). It is not claimed as a DVM S2 or every-model Samsung VRF code. Confirm the installed model, reporting address, and matching manual before diagnosis or parts replacement.
Source detail
Singapore / model note
What it says
Samsung-authored DVM S2 service-manual row from AC-00294E_2 (June 2024), retrieved from a public document mirror. Confirm the installed outdoor model, connected indoor family, regional suffix, and matching locally supplied manual before diagnosis or parts replacement.
Source detail
Singapore / model note
What it says
Official Samsung regional AJ***TN1DKH WindFree 1-way cassette installation-manual row. Confirm the exact indoor and outdoor family before using this interpretation; the Malaysia support source does not establish exact Singapore supply.

What to check before repair

The source table establishes the code meaning, not a repair procedure. Capture evidence first; model-specific tests belong to the matching service manual.

Homeowner checks and technician confirmations
You can check	Technician should confirm
Photograph the complete E151 error code before taking any action.	Confirm E151 exactly and record which controller, gateway, or unit reported it.
Capture the Samsung DVM S VRF indoor and outdoor model stickers and identify which controller or unit reported it.	Match the indoor and outdoor model stickers, installed family, and reporting equipment to the source scope.
The source table provides no customer reset procedure. Preserve the evidence and use the matching service manual for any system action.	Follow the matching service-manual procedure and keep measured test evidence before naming a failed part.

You can check
Photograph the complete E151 error code before taking any action.
Technician should confirm
Confirm E151 exactly and record which controller, gateway, or unit reported it.
You can check
Capture the Samsung DVM S VRF indoor and outdoor model stickers and identify which controller or unit reported it.
Technician should confirm
Match the indoor and outdoor model stickers, installed family, and reporting equipment to the source scope.
You can check
The source table provides no customer reset procedure. Preserve the evidence and use the matching service manual for any system action.
Technician should confirm
Follow the matching service-manual procedure and keep measured test evidence before naming a failed part.

Source-bounded repair decision

Samsung DVM S VRF E151 confirms the source-table fault label, not a failed part or repair procedure. Match the installed model to its service manual and require measured diagnostic evidence before approving parts, settings, or refrigerant work.

Whether the reporting controller or unit and exact installed model are confirmed.
What the matching service-manual procedure and measured tests show.
Whether the proposed repair names the evidence for the failed part or condition.

Samsung E151 questions

What does the Samsung E151 error mean?

Samsung DVM S VRF E151 is listed as error due to opened EEV of indoor unit (2nd detection), indoor electronic expansion valve remained open on second detection, and electronic expansion valve failed to open in DVM S ODU service manual (2018), DVM S2 service manual (2024), Samsung AJ***TN1DKH WindFree 1-way cassette, and Samsung DVM ERV Plus source rows. The loaded row is source-backed by official diagnostic material. Do not collapse this code across model families; use the model, series, or system type to choose the right row. Confirm the exact model, series, or signal row before accepting a parts quote.

Can I fix a Samsung E151 error myself?

No. E151 needs a technician's measurement before parts are decided. Photograph the complete E151 error code before taking any action. Capture the Samsung DVM S VRF indoor and outdoor model stickers and identify which controller or unit reported it.

Is it safe to keep running the aircon with an E151 error?

Record E151 and stop there; the source table gives no customer reset procedure. Arrange diagnosis with the matching service manual.

What causes a Samsung E151 error?

Samsung E151 has source-backed wording that depends on the exact model, source row, or reporting unit. Use the decoder on this page before assuming a specific cause.

Will a Samsung E151 error need a repair or a full replacement?

Samsung DVM S VRF E151 confirms the source-table fault label, not a failed part or repair procedure. Match the installed model to its service manual and require measured diagnostic evidence before approving parts, settings, or refrigerant work.

What should I send a technician about a Samsung E151 error?

Before booking, send: E151 error code, a clear display photo, Samsung DVM S VRF indoor and outdoor model stickers, the controller, gateway, or unit that reported the code, operating mode and affected area, and any power or setting changes made after the code appeared.

Confirm the fault

Share the error code, model number and symptoms so we can assess the likely cause.

Not the right code?

Browse the full Samsung list or check a few codes in the same fault category.