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RELAY PANEL

18-HD68D1-10 27

Section 7. Troubleshooting

Troubleshooting

Symptom

Possible Cause

Action

COMM LED is not 
flashing the ap-
propriate number  
of devices

Loss of 24VAC between power (R) and common (B)  Check for proper incoming 24VAC power

One or more communicating devices is not com-
municating

• 

~12VDC between D & B = Proper communication

• 

~16VDC between D & B = Loss of communication

• 

Less than ~12VDC between D & B = shorted or no power

Check for open or shorts in field wiring

Evaluate other communicating devices and use 
the service facts of that device if not communi-
cating properly

Bit Master LED is 
off or fluttering

Loss of 24VAC between power (R) and common (B) Check for proper incoming 24VAC power
Loss of communication

• 

0VDC between D & B (shorted or no power)

• 

Less than ~12VDC between D & B (low level short)

Check for shorted wire between data (D) and 
common (B) wires

HVAC System 
LED is not illumi-
nating when Relay 
Panel is calling for 
a particular relay

Control is not calling

Check the System Report screen at the control 
to verify demand

Relay Panel failed

Verify 24VAC between relay output terminal and 
common (B)

**Relay output contains snubber circuits; always 
check with a load applied

Section 6. LED Indicators

Aux2

Relay Panel

Bit Master

Comm

HV

AC System

Sensor

s

Thermostat

and Indoor Unit

Outdoor

Remote

Data

Hot

Com

D R B

Indoo

r

RS
RS

ODT
ODT

24 

Va

c

 Onl

y

24 

Va

c

 Onl

y

24 

Va

c

 Only

Aux2

Aux1

Aux1

Hum

Hum

BK PWM

Fan

G

W3   Stg3

W2   Stg2

W1   Stg1

Y1   Stg1
Y2   Stg2

0      SOV

NORM

Dual Fuel

  Switch

DUAL

Comm
Communication LED – Amber

•  LED on when first powering up
•  LED flashes number of communicating com-

ponents in the system.

•  (ex.  communicating control with relay panel 

will equal two flashes)

Bit Master 
Bitmaster/Clock Signal LED – Green

•  LED on when Clock is working

HVAC System
HVAC System LEDs – Green

•  A Green LED will illuminate when the relay is 

energized.

Содержание BAY24VRPAC52DC

Страница 1: ...grounds of electrical and mechanical experience Any attempt to repair a central air conditioning product may result in personal injury and or property dam age The manufacturer or seller cannot be resp...

Страница 2: ...nal Accessories Sensor Description ZZSENSAL0400AA Indoor Temperature Sensor BAYSEN01ATEMPA Outdoor Temperature Sensor 2 2 Contents in Box The following parts are included in product model BAY24VRPAC52...

Страница 3: ...Y1 Stg1 Y2 Stg2 0 SO V NO RM Du al Fue l Sw itch DUA L Relay Panel Section 3 Installation Remove Cover Mark Mounting Location 1 2 Mark four holes on the wall using the base as a template A level may...

Страница 4: ...s product it may be necessary to work with live electrical components Failure to follow all electrical safety precautions when exposed to live electrical components could result in death or serious in...

Страница 5: ...e there is ample length to reach the connectors Bitm Co HVAC System Thermos and Indoo Data Hot D R B K PWM Fan G W3 Stg3 W2 Stg2 W1 Stg1 Y1 Stg1 Y2 Stg2 0 SOV Aux2 Relay Panel Fault Comm Bit Master HV...

Страница 6: ...m BK PWM Fan G W3 Stg3 W2 Stg2 W1 Stg1 Y1 Stg1 Y2 Stg2 0 SOV NORM Dual Fuel Switch DUAL A B D C Refer to the following diagrams for descriptions of each terminal This switch ships in the NORM position...

Страница 7: ...ta Hot Com D R B Indoor RS RS ODT ODT 24 Vac Only 24 Vac Only 24 Vac Only Aux2 Aux1 Aux1 Hum Hum BK PWM Fan G W3 Stg3 W2 Stg2 W1 Stg1 Y1 Stg1 Y2 Stg2 0 SOV NORM Dual Fuel Switch DUAL B For convenience...

Страница 8: ...compressor two stage units 5 D terminal is on TAM9 ONLY See note on page 7 regarding HUM and AUX terminals Caution Do not run Outdoor Remote sensor wires in the same bundle with HVAC wires Also keep...

Страница 9: ...V ONLY O Y1 Y2 W1 W2 W3 G BK HUM HUM AUX1 AUX1 AUX2 AUX2 RELAY PANEL O R B YI YO W1 W2 W3 G INDOOR UNIT B Y OUTDOOR UNIT COMMUNICATING CONTROL D R B D R B Diagram 3 1 Stage Cooling w GAM5A or TAM4 Mod...

Страница 10: ...AN PWM HUM HUM AUX1 AUX1 AUX2 AUX2 24V ONLY 24V ONLY 24V ONLY O Y1 Y2 W1 W2 W3 G BK HUM HUM AUX1 AUX1 AUX2 AUX2 RELAY PANEL R R B Y W1 W2 W3 G INDOOR UNIT B Y1 Y2 OUTDOOR UNIT COMMUNICATING CONTROL D...

Страница 11: ...rflow 6 1 STAGE COOLING W GAF2 36M MODEL AIR HANDLER SOV STG2 STG1 STG1 STG3 STG2 FAN PWM HUM HUM AUX1 AUX1 AUX2 AUX2 24V ONLY 24V ONLY 24V ONLY O Y1 Y2 W1 W2 W3 G BK HUM HUM AUX1 AUX1 AUX2 AUX2 RELAY...

Страница 12: ...Y PANEL R B W1 W2 G INDOOR UNIT B Y OUTDOOR UNIT COMMUNICATING CONTROL D R B D R B 1 2 NOTES 1 Cut and remove the BK jumper at the indoor unit 2 R connection at outdoor unit is required only for two c...

Страница 13: ...DOOR UNIT R B Y1 Y2 OUTDOOR UNIT COMMUNICATING CONTROL D R B D R B D 1 R connection at outdoor unit only required for two compressor two stage units 1 Diagram 12 1 Stage Cooling w Gas Furnace See note...

Страница 14: ...Y1 Y2 W1 W2 W3 G BK HUM HUM AUX1 AUX1 AUX2 AUX2 RELAY PANEL O R B C Y1 Ylo BK Y Y2 W1 W2 G INDOOR UNIT R B Y Y1 Y2 OUTDOOR UNIT COMMUNICATING CONTROL D R B D R B 1 3 2 13 1 OR TWO STAGE COOLING w S9V2...

Страница 15: ...R B OUTDOOR UNIT COMMUNICATING CONTROL D R B D R B 14 Communicating VS Heatpump w Non Communicating S9V2 Furnace 4 pin VSPD Motor Diagram 15 Communicating VS Cooling w Non Communicating S9V2 Furnace...

Страница 16: ...OOR UNIT C Y OUTDOOR UNIT COMMUNICATING CONTROL D R B D R B Diagram 18 Ameristar 1 Stage Cooling Diagram 17 Package 1 Stage Heat Cool w Non Variable Speed Blower See note on page 7 regarding HUM and A...

Страница 17: ...t Pump w TAM7 or TAM9 in 24 volt mode Model Air Handler Heat Pump Applications 1 1 OR 2 STAGE HEAT PUMP W TAM7 or TAM9 in 24 volt mode MODEL AIR HANDLER NOTES 1 Remove the factory installed BK jumper...

Страница 18: ...Caution Do not run Outdoor Remote sensor wires in the same bundle with HVAC wires Also keep away from high voltage wiring to avoid interference 3 1 STAGE HEAT PUMP W GAM5B MODEL AIR HANDLER NOTES 1 Y...

Страница 19: ...or wires in the same bundle with HVAC wires Also keep away from high voltage wiring to avoid interference 5 1 STAGE HEAT PUMP W GAF2 S MODEL AIR HANDLER NOTES 1 Connection to X2 is not required for th...

Страница 20: ...e on page 7 regarding HUM and AUX terminals Caution Do not run Outdoor Remote sensor wires in the same bundle with HVAC wires Also keep away from high voltage wiring to avoid interference 7 1 STAGE HE...

Страница 21: ...mote sensor wires in the same bundle with HVAC wires Also keep away from high voltage wiring to avoid interference 9 1 STAGE HEAT PUMP W TEM4 MODEL AIR HANDLER NOTES 1 Connection to X2 is not required...

Страница 22: ...rom high voltage wiring to avoid interference D 10 1 OR 2 STAGE HEAT PUMP 24 volt w TEM8 communicating variable speed AIR HANDLER NOTES 1 Remove the factory installed BK jumper at the indoor unit 2 Co...

Страница 23: ...HUM and AUX terminals Caution Do not run Outdoor Remote sensor wires in the same bundle with HVAC wires Also keep away from high voltage wiring to avoid interference Diagram 13 Package 1 or 2 Stage He...

Страница 24: ...AC wires Also keep away from high voltage wiring to avoid interference 2 1 OR 2 STAGE HEAT PUMP w S9V2 FURNACE 4 PIN VSPD MOTOR NOTES 1 Cut and remove the factory installed BK jumper at the indoor uni...

Страница 25: ...door Remote sensor wires in the same bundle with HVAC wires Also keep away from high voltage wiring to avoid interference NOTES 1 Cut the BK jumper at the indoor unit After cutting the jumper power mu...

Страница 26: ...iable speed indoor blower Ensure clipped wires are capped and taped off RELAY PANEL 1 SOV STG2 STG1 STG1 STG3 STG2 FAN PWM HUM HUM AUX1 AUX1 AUX2 AUX2 24V ONLY 24V ONLY 24V ONLY O Y1 Y2 W1 W2 W3 G BK...

Страница 27: ...ire between data D and common B wires HVAC System LED is not illumi nating when Relay Panel is calling for a particular relay Control is not calling Check the System Report screen at the control to ve...

Страница 28: ...er has a policy of continuous product and product data improvement and it reserves the right to change design and specifications without notice Representative only illustrations included in this docum...

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