Amana RHF Manual de instrucciones descargar pdf (Pagina 10)

Tubing Size Torque (Foot-Pounds)

3/8 10

1/2, 5/8, 3/4 14

7/8, 1 1/8 16

After closing the valve bonnet, perform a final refrigerant

leak test on the valves and sweat connections. Return the

room thermostat to the desired settings.

Troubleshooting

(QUALIFIED SERVICER ONLY)

When troubleshooting, the first step should always be to

check for clean coils, clean filter(s), and proper airflow.

Indoor airflow should be 350 to 450 CFM per ton of cooling,

based on the size of the outdoor unit.

If further information is needed, see the Remote Heat

Pump Service Manual or contact your Amana distributor.

Defrost System

This unit is equipped with a time/temperature defrost board.

Defrosting of the outdoor coil is determined by both coil

temperature and compressor run time. Adjustment can be

changed as required. There are 30, 60, and 90 minute

settings available. Adjust only if geographical conditions,

outdoor humidity, or other adverse conditions make it

necessary.

Figure 5

WARNING

To avoid electrical shock or death,

disconnect the power before changing the

defrost time cycle.

If adjustment of the run time appears advisable:

1. Disconnect power to outdoor unit.

2. Move the defrost time adjustment pin from 90 minutes

to 60 minutes or 30 minutes as required (refer to Figure

5).

3. Reconnect the electrical power.

The maximum defrost time is 14 minutes. Most defrost

cycles are shorter.

SERVICING

WARNING

To avoid electrical shock or death,

disconnect the electrical power before

servicing.

When servicing, it may be necessary to rapidly advance the

system through a defrost cycle. To do this:

1. Ensure the 24Vac power is on.

2. Place the defrost time adjustment pin on TEST.

NOTE: If the outdoor coil temperature is above 30°F,

place a jumper wire between the DFS terminals

(defrost sensor) on the defrost control before placing

defrost time adjustment pin on TEST.

3. Reconnect electrical power to outside unit.

4. Place the system into heating operation.

The defrost board function will speed up when the test pins

are connected. Time between defrosts will be 14 seconds.

Defrost time will be 6.5 seconds.

After servicing is completed, disconnect the power, move

the Defrost Time Select Tab back to 30, 60, or 90, remove

jumper wire on DFS, and reconnect the power.

NOTES:

1. If the time select tab remains in TEST position for five

(5) minutes, the control will ignore TEST mode and

assume a normal 90 minute defrost cycle. To over-

ride this, briefly remove and then replace the select

tab.

2. When the unit starts the defrost cycle, quickly re-

move the time select tab to allow normal defrosting

and defrost termination to proceed. The select tab

can be reconnected to TEST to repeat the defrost

cycle, or the tab can be placed in the desired time

setting. (Jumping both test pins with a small insu-

lated screw driver will also work.)

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