Dolphin power supply green light

dolphin

Double-check before purchasing

LED colour and blink pattern meanings vary between Dolphin PSU generations. Some older models use green for all states; newer models may include amber or red. Consult your model-specific manual.

The Problem

The green indicator light on a Dolphin power supply indicates the unit has mains power and is operational. Understanding the difference between a steady green, a slow green blink, and a fast green blink helps diagnose whether the PSU is in normal operation, standby, or a fault state.

Steps

1
Observe the green light behaviour: steady, slow single blink, or rapid flashing.
2
Steady green = operational. Slow single blink = standby, press start button. Rapid flash = possible fault, see blink code guides.
3
If steady green but robot not responding: disconnect cable, inspect connector, reconnect firmly. Perform a full 90-second reset.
4
If green light changes to a different colour or pattern after attempting a cycle, cross-reference with the relevant blink code guide.

Possible Causes & Solutions

common

Steady green light — normal operation

A solid, steady green light means the PSU has mains power and the robot is running or idle in standby. No action needed.

common

Single slow green blink — standby or ready mode

A single slow green blink is the PSU standby indicator on many Dolphin models — the unit is ready for a cycle command. Press the cycle start button or wait for a scheduled cycle.

occasional

Green light on but robot not starting

If the green light is steady but the robot does not start on command, check the cable connection and perform a full reset. The PSU is powered but not delivering current to the robot.

occasional

Green light flashing rapidly — transition or fault on some models

Rapid green flashing can indicate a fault state on some PSU models. Perform a reset and check cable connections. If the rapid flash continues, consult the specific blink code guides.

When to Replace

A PSU with a normal green indicator does not need replacement — the issue is downstream. Only replace if the indicator is absent or the unit fails to power the robot after cable and reset diagnosis.

Where to Buy

Find compatible replacement parts from these retailers:

Check price for dolphin replacement parts on Amazon

Frequently Asked Questions

What does a steady green light on my Dolphin PSU mean?

A solid green light means the PSU has mains power and is in normal operating or idle state. If the robot is in the pool and the light is steady, the PSU is delivering power and the cycle should be running.

My Dolphin PSU has only a green light — no other colours. Is that normal?

Yes. Many Dolphin PSU models have a single LED that uses only green. Fault states are communicated by the number of blinks rather than different colours.

The green light came on but the robot does not move — what do I check?

Green light with no robot response typically points to the cable connection or a need for reset. Disconnect the cable, inspect the connector, reconnect firmly, and perform a 90-second power cycle.