White Rodgers 1F85-277 Guía para resolver problemas descargar pdf (Pagina 64)

The 50V51-843 has only one serviceable part –an automotive

type fuse, which protects the low voltage transforme

r from

dam

age if the output is short-circuited. If the fuse has opened

up, remove whatever caused the short circuit and replace the

fuse with only a 3 Amp automotive type fuse. If the fuse does

not correct the condition, replace the entire 50V51 control. There

are not other user serviceable parts.

Following installation or replacement, follow appliance manu-

facturer’s recommended installation or service instructions to

insure proper operation.

INSTALLER MUST READ FOR PROPER

INSTALLATION

• Wiring harnesses are included to complete the installation of

the “UNIVERSAL 50V51-843” for Goodman applications.

• For replacing the ignitor, a UNIVERSAL 21D64-2 is included.

For proper installation, refer to the instructions included in

the 21D64-2 kit.

• IMPORTANT: The installer may have to enlarge existing igni-

tor hole to accommodate 21D64-2 larger (.394”) diameter.

SYSTEM LOCKOUT

When a system lockout occurs (1hour), the gas valve is de-

energized, the low speed inducer blower is energized for the

60 second interpurge period and the circulator is energized for

selected heat off delay if it was previously ON. The diagnostic

indicator light will ﬂash the fault that is present (refer to diag-

nostic table).

MOUNTING AND WIRING

All wiring should be installed according to local and national

electrical codes and ordinances.

The control must be secured to an area that will experience a

minimum of vibration and remain below the maximum ambient

temperature rating of 175°F. The control is approved for minimum

ambient temperatures of -40°F.

Any orientation is acceptable.

Refer to the wiring diagram and wiring table when connecting

the 50V51 control to other components of the system.

UL approved, 105°C rated 18 gauge min., stranded, 2/64” thick

insulation wire is recommended for all low voltage safety circuit

connections. Refer to 50V51 speciﬁcation sheet for recom-

mended terminals to mate with those on the control.

UL approved, 105°C rated 16 gauge min., stranded, 4/64” thick

insulation wire is recommended for all line voltage connections.

Refer to 50V51 speciﬁcation sheet for recommended terminals

to mate with those on the control.

GOODMAN NOTE

FOR GOODMAN 50V51-289 APPLICATION, THERE

ARE TWO ADAPTER HARNESSES INCLUDED IN THIS

PACKAGE TO COMPLETE THE INSTALLATION.

To reset the control after system lockout, do one of the

following:

System Reset

Remove 24 VAC power to the control for twenty (20) seconds

or longer to reset the control.

Thermostat Reset

Remove the call for heat from the thermostat for a period of

between (1) second and less 20 seconds. If ﬂame is sensed

with the gas valve de-energized, interrupting the call for heat

at the thermostat will not reset the control.

Auto Restart

After one (1) hour of internal or external lockout, the control

will automatically reset itself and go into an auto restart purge

for 15 seconds.

DIAGNOSTIC FEATURES

The control continuously monitors its own operation and the op-

eration of the system. If a failure occurs the diagnostic indicator

LED (DSI) will ﬂash a “RED” failure code. If a failure is internal

to the control the “RED” indicator will stay on continuously.

In this case, the entire control should be replaced as the

control is not ﬁeld-repairable. If the LED is continuously OFF,

there may be no power to the control or a failure within the con-

trol. If the sensed failure is in the system (external to the control),

the LED will ﬂash RED in the sequence listed in the Diagnostic

Table. The LED will also indicate “System Status” as per the

Amber and Green LED signatures listed in the Diagnostic Table.

The LED will ﬂash one RED ﬂash at power up.

CFM INDICATOR

The LED (DS2) CFM ﬂashes when the blower motor is running.

The ﬂashing indicates the motor CFM (cubic feet per minute)

air ﬂow designated by the furnace manufacturer. Consult the

furnace manufacturer for ﬂash code detail.

FAULT CODE RETRIEVAL

To retrieve fault codes, push and release the “LAST ERROR”

button for more than 1/5 second and less than 5 seconds. (Con-

trol will indicate this period by solid GREEN for 1/5 secs. to 5

secs.). The LED will ﬂash up to ﬁve stored fault codes, beginning

with the most recent. If there are no fault codes in memory, the

LED will ﬂash two green ﬂashes. The control will

ﬂash the most recent error ﬁrst and the oldest error last (last in

ﬁrst out). There shall be 2 seconds between codes. Solid LED

error codes will not be displayed.

NOTE

These error codes may be different from furnace label or

furnace manual.

INTEGRATED

FURNACE CONTROLS

21V51U-843

OPERATION

TECHNICAL HELP

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