Product Overview
Carrier VVT4 Option Board for Terminal Fan and Auxiliary Heat Control, Part 33ZCOPTBRD-01
Condition
Unused, new old stock. Clean and in excellent condition. The board photographs the way it left the assembly line: bright green solder mask with no scratches or handling marks, crisp white silkscreen reading VVT4 OPTION BOARD next to a PM-01C stamp, and an even factory solder finish across every joint. The screw terminals are bright with no wire remnants or discoloration in the clamps. A strip of clear protective film is still stuck along one edge, and the row of unpopulated pads beside the optocouplers carries factory solder domes from the wave line. Board identifiers CEBD430563-03A and CEPL130563-01 are legible along the bottom edge, the Carrier oval is unfaded, and the TLP3063 couplers carry a 1005 marking with the triacs marked 0950. Against the millimeter ruler the board measures approximately 73 mm by 88 mm.
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Product Overview
The Carrier 33ZCOPTBRD-01 is the option board that adds terminal fan and auxiliary heat control to a Carrier VVT zone controller. VVT is Carrier's Variable Volume and Temperature zoning approach, where each zone terminal handles its own damper and, when equipped, its own local heat. The board's terminal legends spell out exactly what it drives: a six-position screw block marked 24 VAC with Heat 1, Heat 2 and Heat 3, a two-position block marked 24 VAC Fan, and a second two-position block at J8 marked 24 VAC Aux. Switching is solid state, using five Toshiba TLP3063 photo-triac couplers feeding five surface-mount ST triacs, one per output, each with its own snubber-style resistor and capacitor pair. There are no mechanical relays on this board. The silkscreen calls it out as a VVT4 OPTION BOARD, and the bare board carries the Carrier engineering numbers CEBD430563-03A and CEPL130563-01, which are the numbers to quote when cross-checking a parts list against an OEM drawing.
Key Features
- Carrier part number: 33ZCOPTBRD-01, genuine OEM board
- Function: terminal fan and/or auxiliary heat control for Carrier VVT zone controllers
- Silkscreen identity: VVT4 OPTION BOARD, with a PM-01C stamp and SM-01C marking at the top edge
- Board identifiers: CEBD430563-03A and CEPL130563-01
- Terminal legends: six-position block J7 marked 24 VAC Heat 1, Heat 2, Heat 3
- Additional outputs: two-position 24 VAC Fan block and two-position 24 VAC Aux block at J8
- Output switching: five Toshiba TLP3063 photo-triac couplers driving five surface-mount ST triacs
- No electromechanical relays, no moving contacts
- Construction: surface-mount green PCB with four corner mounting holes, three crosshair-targeted holes and two smaller plated holes
- Approximate size against the ruler: 73 mm by 88 mm
- Condition: unused new old stock, not bench tested
- Voltage, current and load ratings per output: Not confirmed - verify against Carrier documentation before use
Applications
- HVAC service technician bringing a Carrier VVT zone back to full fan and heat control after an option board failure
- Building automation contractor commissioning a VVT terminal that has local auxiliary heat in the zone
- Facilities maintenance group stocking spares for a legacy Carrier VVT installation that is no longer easy to source
- Controls integrator bench-checking VVT terminal wiring and output sequencing before a retrofit weekend
Frequently Asked Questions
What does this option board actually add to a Carrier VVT zone controller?
It provides the switched 24 VAC outputs used for terminal fan and auxiliary heat control. The board's own legends read 24 VAC with Heat 1, Heat 2 and Heat 3 on the six-position block, 24 VAC Fan on one two-position block, and 24 VAC Aux on the other. How those outputs are enabled and sequenced is a function of your controller and its configuration, so confirm the sequence against the Carrier literature for your system.
How are the outputs switched, and is there anything to wear out?
Switching is optical and solid state. Five Toshiba TLP3063 photo-triac couplers drive five surface-mount ST triacs, one per output, with snubber-style resistor and capacitor pairs alongside. Nothing on the board clicks, sticks or pits like a relay contact. Per-output current and voltage ratings are not confirmed here - verify against Carrier documentation before use.
Has this board been powered up or tested?
No. It is sold as unused new old stock on its physical condition, not on a bench test. There is no heat discoloration, no rework flux, and no sign of prior installation anywhere on it. If a functional check matters for your job, plan on verifying it in your own system.
How do I know it is right for my zone controller?
Match the Carrier part number 33ZCOPTBRD-01 against what your equipment calls for. The CEBD430563-03A and CEPL130563-01 board numbers give you a second cross-reference when you are comparing against an OEM drawing or a parts list. Compatibility beyond that part number is not confirmed here - check your controller documentation.
I need one board, not a case of ten. Is that a problem?
Not at all, and that is the point of PartsMine. Take the single board the repair in front of you needs, or a pair for truck stock, instead of buying a forced lot. Shipping is $8 flat rate and free over $28, and orders leave our Idaho warehouse the same or next business day. We have more than one of these on the shelf, so a matched set for a multi-zone job is no trouble.
Carrier built VVT to send conditioned air where a building actually needs it, and this small board is what lets a single terminal call for its own heat and its own fan. It sat out the last stretch of that system's life still factory clean, waiting for the zone that has been running one output short.
