Carrier 25VNA8 Instruction Manual download pdf (Page 19)

Status Codes

Table 7 shows the status codes flashed by the amber status light.

Most system problems can be diagnosed by reading the status code

as flashed by the amber status light on the control board.

The codes are flashed by a series of short and long flashes of the

status light. The short flashes indicate the first digit in the status

code, followed by long flashes indicating the second digit of the

error code.

The short flash is 0.25 seconds ON and the long flash is 1.0 second

ON. Time between flashes is 0.25 seconds. Time between short

flash and first long flash is 1.0 second. Time between code

repeating is 2.5 seconds with LED OFF.

Codes are easily read from user interface (UI)

EXAMPLE:

3 short flashes followed by 2 long flashes indicates a 32 code.

Table 7 shows this to be low pressure switch open.

Utility Interface With Infinity Touch Control

The utility curtailment relay should be wired between the two

UTIL connections on the control board for this Infinity

Communicating System (see Fig. 27). This input allows a power

utility device to interrupt compressor operation during peak load

periods. When the utility sends a signal to shut the system down,

the User Interface status screen will display , ”Curtailment Yes”.

See UI installation instructions for setup details.

Utility Relay

A13414

Fig. 27 -- Variable Speed Control Board with optional Utility Relay

1 2 ... 14 15 16 17 18 19 20 21 22

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Carrier 25VNA8 Instruction Manual Page 19