75
Table 33 – Humidi--MiZer
Troubleshooting
PROBLEM
CAUSE
SOLUTION
Reheat1 (Subcooling) Mode Will Not
Activate
No Dehumidification Demand.
See
“No Dehumidification Demand”
below.
Outdoor temperature too low.
Compare outdoor temperature to LTLO setting. Normal operation.
General Cooling Mode problem.
See Cooling Service Troubleshooting.
Faulty Reheat Control Board (RCB) relay operation. See
“Reheat Control Board (RCB) Relay Operation”
below.
Cooling Liquid Valve open.
See
“Cooling Liquid Valves Operation”
below.
Reheat2 (Hot Gas Reheat) Mode Will Not
Activate
No Dehumidification Demand.
See
“No Dehumidification Demand”
below.
Outdoor temperature too low.
Compare outdoor temperature to LTLO setting. Subcooling (Re-
heat1) operation.
General Cooling Mode problem.
See Cooling Service Troubleshooting.
Faulty Reheat Control Board (RCB) relay operation. See
“Reheat Control Board (RCB) Relay Operation”
below.
Cooling Liquid Valve open.
See
“Cooling Liquid Valves”
below.
Reheat Discharge Valve closed.
See
“Reheat Discharge Valve (RDV) ”
below.
No Dehumidification Demand
Relative humidity set--point is too high -- Hu-
midistat.
Check/decrease setting on accessory Humidistat.
No humidity signal.
Check wiring at RCB: Pin J1A--1
Check Humidistat or Humidity Sensor
Check Low Temperature Lockout (LTLO) switch status and
wiring.
Reheat Control Board (RCB)
Relay Operation
No 24V signal to input terminals.
Check wiring at RCB: Pin J1A--1
Check Low Temperature Lockout (LTLO) switch status and
wiring.
Check wiring and voltage at RCB: Pin J2--1
Check Control Terminal Board (CTB): Terminal R
Check TRAN primary, secondary circuit breaker
Check TRAN2 primary, secondary circuit breaker (when
used).
Check wiring.
24V signal to input terminal J1A--2.
Check for Thermostat Heating Demand (W1).
If YES, normal operation.
if NO, check wiring.
No power to output terminals.
Replace faulty Reheat Control Board (RCB).
Relay outputs do not change state.
Replace faulty Reheat Control Board (RCB).
Cooling Liquid Valves Operation
CSV (Sizes 04--12) (Type 1):
Open in Cool (De--energized)
Close in Reheat1 and Reheat2 (Energized)
CLV (Size 14) (Type 2):
Open in Cool (De--energized)
Close in Reheat1 and Reheat2 (Energized)
LDV: 3--way (Size 16) (Type 3):
NO: Open in Cool (De--energized)
Close in Reheat 1 and Reheat 2
(Energized)
NO: Close in Cool (De--energized) Open
in Reheat 1 and Reheat 2 (Energized)
Reheat1 or Reheat2 will not activate.
Check RCB Pin J2--2 for 24V
Check RCB Pin J2--2 for 0V
Check RCB Pin J2--2 for 24V
See
“Reheat Control Board (RCB) Relay Operation”
.
Solenoid Coil Burnout (CLV, LDV)
Check continuous voltage is less than 10%.
Check under--voltage is less than 10%
Check for missing coil assembly parts.
Check for damaged valve enclosing tube.
Stuck valve.
Replace CLV valve. Replace Filter Drier.
Reheat Discharge Valve Operation
Reheat2 will not activate
DSV, DSV1, RDV, RDV1:
Check for RCB Pin J2--5 for 24V.
DSV2, RDV2: Check for RCB Pin J2--5 for 24V.
See
“Reheat Control Board (RCB) Relay Operation”
Supply (Indoor) Fan Motor Not Running in
Reheat2 Mode
Reheat Control board:
No Input on RCB pin J1B--4.
RCB Relay failure at output RCB pin JB--2
See
“Reheat Control Board (RCB) Relay Operation”
.
48TC
Содержание 48TC 04 Series
Страница 27: ...27 COOLING CHARGING CHARTS cont C14064 Fig 33 Cooling Charging Charts 12 5 Ton 48TC...
Страница 28: ...28 COOLING CHARGING CHARTS cont C13217 Fig 34 Charging Chart 48TC Size D14 with Novation Coil 48TC...
Страница 29: ...29 COOLING CHARGING CHARTS cont C13218 Fig 35 Charging Chart 48TC Size D16 48TC...
Страница 30: ...30 COOLING CHARGING CHARTS cont C10666 Fig 36 Charging Chart 48TC Size B04 Humidi MiZer in Reheat 1 48TC...
Страница 31: ...31 COOLING CHARGING CHARTS cont C10667 Fig 37 Charging Chart 48TC Size B05 Humidi MiZer in Reheat 1 48TC...
Страница 32: ...32 COOLING CHARGING CHARTS cont C10668 Fig 38 Charging Chart 48TC Size B06 Humidi MiZer in Reheat 1 48TC...
Страница 33: ...33 COOLING CHARGING CHARTS cont C10669 Fig 39 Charging Chart 48TC Size B07 Humidi MiZer in Reheat 1 48TC...
Страница 40: ...40 C14052 Fig 51 Typical Smoke Detector System Wiring 48TC...
Страница 114: ...114 APPENDIX III WIRING DIAGRAMS C14065 Fig 95 48TC A08 A12 Control Diagram 208 230 3 60 460 3 60 575 3 60 48TC...
Страница 115: ...115 APPENDIX III WIRING DIAGRAMS C13240 Fig 96 48TC D08 D12 Control Diagram 208 230 3 60 460 3 60 575 3 60 48TC...
Страница 116: ...116 APPENDIX III WIRING DIAGRAMS C13241 Fig 97 48TC D14 Control Diagram 208 230 3 60 460 3 60 575 3 60 48TC...
Страница 117: ...117 APPENDIX III WIRING DIAGRAM LIST C12412 Fig 98 48TC D16 Control Diagram 208 230 3 60 460 575 3 60 48TC...
Страница 122: ...122 APPENDIX III WIRING DIAGRAMS C12413 Fig 103 48TC A04 A07 Power Diagram 208 230 1 60 48TC...
Страница 123: ...123 APPENDIX III WIRING DIAGRAMS C12414 Fig 104 48TC A04 A07 Power Diagram 208 230 3 60 460 3 60 48TC...
Страница 124: ...124 APPENDIX III WIRING DIAGRAM LIST C12415 Fig 105 48TC A04 A07 Power Diagram 575 3 60 48TC...
Страница 125: ...125 APPENDIX III WIRING DIAGRAMS C13245 Fig 106 48TC A08 A12 Power Diagram 208 230 3 60 460 3 60 48TC...
Страница 126: ...126 APPENDIX III WIRING DIAGRAM LIST C13246 Fig 107 48TC A08 A12 Power Diagram 575 3 60 48TC...
Страница 127: ...127 APPENDIX III WIRING DIAGRAMS C13484 Fig 108 48TC D08 D12 Power Diagram 208 230 3 60 460 3 60 48TC...
Страница 128: ...128 APPENDIX III WIRING DIAGRAM LIST C13247 Fig 109 48TC D08 D12 Power Diagram 575 3 60 48TC...
Страница 129: ...129 APPENDIX III WIRING DIAGRAMS C13248 Fig 110 48TC D14 Power Diagram 208 230 3 60 460 3 60 48TC...
Страница 130: ...130 APPENDIX III WIRING DIAGRAM LIST C13249 Fig 111 48TC D14 Power Diagram 575 3 60 48TC...
Страница 131: ...131 APPENDIX III WIRING DIAGRAMS C12428 Fig 112 48TC B04 B07 Power Diagram 208 230 1 60 with Humidi MiZert 48TC...
Страница 133: ...133 APPENDIX III WIRING DIAGRAM LIST C12430 Fig 114 48TC B04 B07 Power Diagram 575 3 60 with Humidi MiZert 48TC...
Страница 134: ...134 APPENDIX III WIRING DIAGRAMS C12432 Fig 115 48TC E08 E12 Power Diagram 208 230 3 30 460 3 60 with Humidi MiZert 48TC...
Страница 135: ...135 APPENDIX III WIRING DIAGRAM LIST C12433 Fig 116 48TC E08 E12 Power Diagram 575 3 60 with Humidi MiZert 48TC...
Страница 136: ...136 APPENDIX III WIRING DIAGRAMS C12434 Fig 117 48TC E14 Power Diagram 208 230 3 60 460 3 60 with Humidi MiZert 48TC...
Страница 137: ...137 APPENDIX III WIRING DIAGRAM LIST C12435 Fig 118 48TC E14 Power Diagram 575 3 60 with Humidi MiZert 48TC...
Страница 138: ...138 APPENDIX III WIRING DIAGRAM LIST C12422 Fig 119 48TC D16 Power Diagram 208 230 3 60 460 3 60 48TC...
Страница 139: ...139 APPENDIX III WIRING DIAGRAMS C12423 Fig 120 48TC D16 Power Diagram 575 3 60 48TC...
Страница 140: ...140 APPENDIX III WIRING DIAGRAM LIST C12436 Fig 121 48TC E16 Power Diagram 208 230 3 60 460 3 60 with Humidi MiZert 48TC...
Страница 141: ...141 APPENDIX III WIRING DIAGRAMS C12437 Fig 122 48TC E16 Power Diagram 575 3 60 with Humidi MiZert 48TC...
Страница 142: ...142 APPENDIX III WIRING DIAGRAM LIST C14063 Fig 123 48TC A04 12 D08 14 PremierLink Control Diagram 48TC...
Страница 143: ...143 APPENDIX III WIRING DIAGRAM LIST C13485 Fig 124 48TC 16 PremierLink Control Diagram 48TC...
Страница 145: ...145 APPENDIX III WIRING DIAGRAM LIST C13487 Fig 126 48TC 16 RTU Open Control Diagram 48TC...
Страница 146: ...146 APPENDIX III WIRING DIAGRAM LIST C14124 Fig 127 48TC D08 14 E08 14 W7220 2 Speed IFM 48TC...
Страница 147: ...147 APPENDIX III WIRING DIAGRAM LIST C13489 Fig 128 48TC D16 E16 W7220 2 Speed IFM Control Diagram 48TC...
Страница 148: ...148 APPENDIX III WIRING DIAGRAMS C14062 Fig 129 48TC E 14 Control Diagram 208 230 3 60 460 3 60 575 3 60 48TC...
