Breaker buzzing when Aqualink RS Turns on

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It looks like you only need 2 spaces. (1) Double Pole Breaker.

Maybe just move the Heat Pump Breaker to its own enclosure next to the box.

A copper busbar is better than aluminum.

The description is inconsistent.

It looks like this comes with a Breaker.
  • Suitable for use as service entrance equipment
  • Aluminum Bus w/ factory installed Main Breaker; uses HA type Hub
  • Two extra circuits
  • NEMA 3R-rated enclosure helps protect against rainfall and ice formation
  • Copper buss bar is highly conductive
  • Single phase
  • 240-Volt
  • Compatible with type QP, QPH and HQP circuit breakers (not included)
  • ANSI certified and UL listed
  • Will not accommodate a double-pole GFCI or a circuit breaker with a shunt trip

www.homedepot.com

Siemens EQ 60 Amp 2-Space 4-Circuit Outdoor Main Lug Load Center W0204ML1060U - The Home Depot

Visit the Home Depot to buy EQ 60 amp 2-Space 4-Circuit Outdoor Main Lug Load Center W0204ML1060U
www.homedepot.com

4 spaces will give you room for 2 Double Pole Breakers.

Siemens EQ 125 Amp 4-Space 8-Circuit Main Lug Outdoor Load Center.

www.homedepot.com

Siemens EQ 125 Amp 4-Space 8-Circuit Main Lug Outdoor Load Center W0408ML1125U - The Home Depot

Enjoy the 125 amp 4-Space 8-Circuit Outdoor Main Lug Load Center W0408ML1125U, NEMA 3R hot-dipped galvanized steel for rust resistance and has a polyester powder-coat finish for further protection from
www.homedepot.com
 
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Due to the large feeder wires, you can use Polaris insulated multi-tap connectors to split the incoming feeder wires into 2 separate wires that can go to the subpanel input terminals and the Heat Pump Extra box Feeder Input.

You would need to move the Heat pump conduit to the new auxiliary box.

Use black for normal wire and grey for finely stranded wire.

Polaris - Wire Connectors & Wire Terminals - The Home Depot

Get free shipping on qualified Polaris Wire Connectors & Wire Terminals products or Buy Online Pick Up in Store today in the Electrical Department.
www.homedepot.com

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IPL insulated multi-tap connectors are suitable for connecting 3-wires. Will not support combustion. Cold temperature rated to -45°C. Dual rated for use with copper and/or aluminum cables. 600-Volt. Not recommended for fine-stranded, flexible wire (see Polaris Grey Series).

Highlights
Eliminates the need for cover and taping
Insulated with high-dielectric strength plastisol
Molded for precise fit and supplied with removable access plugs over the hex screws
Abrasion and chemical resistant UV resistant
3-port

IPL insulated multi-tap connectors

IPLG series insul-tap multi-port connectors for fine stranded wire can be used with virtually any kind of copper conductor, but is specifically designed for use with fine-stranded, flexible and extra flexible copper conductors. This includes DLO cable and motor lead wire, which makes it excellent for use in motor connect/disconnect applications. Polaris Grey combines all the exceptional features of original support combustion.

Highlights
Safe insulated with high dielectric strength plastisol for tough mechanical protection
Fast: eliminates the need for cover and taping - supplied with removable access plugs over the hex screws to protect against contamination
Abrasion and chemical resistant
UL listed for all types of flexible, fine-stranded wires, uniquely color-coded grey

 
What is the feeder wire size?

To move the 60 amp breaker to a nearby box, you can use #4 AWG or #6 AWG copper THHN.

You would also need to include a #10 AWG copper ground wire.

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JamesW said:
The breaker is bad.

You can see the arcing.

The breakers all need to be replaced with GFCI breakers.

The busbars might also be bad.

You can get a new busbar assembly.

Shut off power at the main breaker and verify no power at the subpanel with a multimeter.

Pull out all of the breakers and find the busbar model number sticker.

Do not do any work unless you are 100% sure that you know how to do it safely.
Click to expand...
You nailed it. The top left breaker was bad. Others seem fine. The busbar seems like it can be salvaged, but they suggest it may be worth just replacing it now while they're doing it.
 
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Code requires GFCI breakers, so you cannot install regular breakers.

If the code changes from the date of install, you do not have to replace existing breakers, but if you do replace a breaker, it has to meet current code.

If you remove a non-code-compliant breaker, you cannot (legally) reinstall it.

The Quadplex Breaker does not come in GFCI, but you do not have room for two individual Two-Pole GFCI breakers.

I would replace the Busbar if it is damaged.

I would put GFCI on everything except the 60 amp Heat Pump Breaker.

I would move the 60 amp Heat Pump Breaker to a separate box next to the current box so that you get an open space for the GFCI Pump Breakers.

If you pull an old breaker for any reason, it is usually best to replace it.
 
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