Bryant R-22 Spezifikationen PDF herunterladen (Seite 34)

SSP-SVX15C-EN

Troubleshooting

Troubleshooting ReliaTel™

Controls

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The RTRM has the ability to provide the service

personnel with some unit diagnostics and system

status information.

Before turning the main power disconnect switch ““OOffff,,””

follow the steps below to check the ReliaTel™

Refrigeration Module (RTRM). All diagnostics & system

status information stored in the RTRM will be lost when

the main power is turned ““OOffff””.

To prevent injury or death from electrocution, it is the

responsibility of the technician to recognize this hazard

and use extreme care when performing service

procedures with the electrical power energized.

NNoottee:: The J6 & J7 screw terminals must be tightened

in order to accurately measure voltage in the

required steps.

1. Verify that the system LED on the RTRM is burning

continuously. If the LED is lit, go to Step 3.

2. If the LED is not lit, verify that 24 VAC is present

between J1-1 and J1-2. If 24 VAC is present,

proceed to Step 3. If 24 VAC is not present, check

the unit main power supply, check transformer

(TNS1). Proceed to Step 3 if necessary.

3. Utilizing ”Method 1”, p. 34 or ”Method 2”, p. 35 in

the System Status Checkout Procedure section,

check the following:

• System status

• Heating status

• Cooling status

NNoottee:: If a System failure is indicated, proceed to

Step 4. If no failures are indicated, proceed to

Step 5.

4. If a System failure is indicated, recheck Step 1 and

Step 2. If the LED is not lit in Step 1, and 24 VAC is

present in Step 2, then the RTRM has failed.

Replace the RTRM.

5. If no failures are indicated, use one of the TEST

mode procedures described in the ”Service Test

Modes chapter,” p. 33 to start the unit. This

procedure will allow you to check all of the RTRM

outputs, and all of the external controls (relays,

contactors, etc.) that the RTRM outputs energize, for

each respective mode. Proceed to Step 6.

6. Step the system through all of the available modes,

and verify operation of all outputs, controls, and

modes. If a problem in operation is noted in any

mode, you may leave the system in that mode for

up to one hour while troubleshooting. Refer to the

sequence of operations for each mode, to assist in

verifying proper operation. Make the necessary

repairs and proceed to Step 7 and Step 8.

7. If no abnormal operating conditions appear in the

test mode, exit the test mode by turning the power

““OOffff”” at the main power disconnect switch.

8. Refer to the individual component test procedures if

other microelectronic components are suspect.

System Status Checkout

Procedure

““SSyysstteemm SSttaattuuss”” is checked by using one of the

following two methods:

Method 1

If the Zone Sensor Module (ZSM) is equipped with a

remote panel with LED status indication, you can check

the unit within the space. If the ZSM does not have

LED’s, use ”Method 2”, p. 35. BAYSENS010B,

BAYSENS011B, BAYSENS119A, BAYSENS020A,

BAYSENS021A, BAYSENS023A, BAYSENS109 and

BAYSENS110 all have the remote panel indication

feature. The LED descriptions are listed below.

• LLEEDD 11 ((SSyysstteemm))

– ““OOnn”” during normal operation.

– ““OOffff”” if a system failure occurs or the LED fails.

– ““FFllaasshhiinngg”” indicates test mode

• LLEEDD 22 ((HHeeaatt))

– ““OOnn”” when the heat cycle is operating.

– ““OOffff”” when the heat cycle terminates or the LED

fails.

– ““FFllaasshhiinngg”” indicates a heating failure.

• LLEEDD 33 ((CCooooll))

– ““OOnn”” when the cooling cycle is operating.

– ““OOffff”” when the cooling cycle terminates or the

LED fails.

– ““FFllaasshhiinngg”” indicates a cooling failure.

The following information describes the complete

listing of failure indication causes.

1 2 ... 29 30 31 32 33 34 35 36 37 38 39 40

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