Nortek R6GF Series, Руководство по установке

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STATUS LED STATUS LED DESCRIPTION STATUS LED TROUBLESHOOTING INFORMATION
ALERT
Flash Code 5
(Yellow LED)
Open Circuit
• Outdoor unit power disconnect is open
• Compressor circuit breaker or fuse(s) is open
• Compressor contactor has failed open
– Check compressor contactor wiring and connectors
– Check for compressor contactor failure (burned, pitted or open)
– Check wiring and connectors between supply and compressor
– Check for low pilot voltage at compressor contactor coil
– High pressure switch is open and requires manual reset
• Open circuit in compressor supply wiring or connections
• Unusually long compressor protector reset time due to extreme ambient
temperature
• Compressor windings are damaged
– Check compressor motor winding resistance
ALERT
Flash Code 6
(Yellow LED)
Open Start Circuit
Current only in run circuit
• Run capacitor has failed
• Open circuit in compressor start wiring or connections
– Check wiring and connectors between supply and the compressor S terminal
• Compressor start winding is damaged
– Check compressor motor winding resistance
ALERT
Flash Code 7
(Yellow LED)
Open run circuit
Current only in start circuit
• Open circuit in compressor run wiring or connections
– Check wiring and connectors between supply and the compressor R terminal
• Compressor run winding is damaged
– Check compressor motor winding resistance
ALERT
Flash Code 8
(Yellow LED)
Welded Contactor
Compressor always runs
• Compressor contactor has failed closed
• Thermostat demand signal not connected to module
ALERT
Flash Code 9
(Yellow LED)
Low Voltage
Control circuit < 17VAC
• Control circuit transformer is overloaded
• Low line voltage (contact utility if voltage at disconnect is low)
• Check wiring connections
* Flash code number corresponds to a number of LED flashes, followed by a pause and then repeated. Trip and alert LED’s flashing at same time means
control circuit voltage is too low for operation.
Table 14. LED Diagnostics - Continued
Table 15. Module Wiring Troubleshooting
MISWIRED MODULE INDICATION RECOMMENDED TROUBLESHOOTING ACTION
Green LED is not on, module does not power up
• Determine if both R & C module terminals are connected.
• Verify voltage is present at module’s R & C terminals.
Green LED intermittent, module powers up only when
compressor runs
• Determine if
R
&
Y
terminals are wired in reverse.
• Verify modules R & C terminals have a constant source.
Trip LED is on, but system and compressor check OK
• Verify
Y
terminal is connected to 24VAC at contactor coil.
• Verify voltage at contactor coil falls below 0.5VAC when off.
• Verify 24VAC is present across
Y
&
C
when thermostat demand signal is present. If not,
R & C are reversed wired.
TRIP LED & ALERT LED flashing together • Verify R & C terminals are supplied with 19 - 28VAC.
ALERT Flash CODE 3 displayed incorrectly
(Compressor short cycling)
• Verify
Y
terminal is connected to 24VAC at contactor coil.
• Verify voltage at contactor coil falls below 0.5VAC when off.
ALERT Flash Code 5, 6, or 7 displayed incorrectly
(Open Circuit, Open Start Circuit or Open Run Circuit)
• Verify the compressor run and start wires are routed through the module’s current sensing
holes.
• Verify the Y terminal is connected to 24VAC at contactor coil.
• Verify voltage at contactor coil falls below 0.5VAC when off.
ALERT Flash Code 6 (Open Start Circuit) displayed
for Code 7 (Open Run Circuit) or vice-versa
• Verify the compressor run and start wires are routed through the correct module sensing
holes.
ALERT Flash Code 8 displayed incorrectly
(Welded Contactor)
• Determine if module’s Y terminal is connected.
• Verify Y terminal is connected to 24VAC at contactor coil.
• Verify 24VAC is present across Y & C when thermostat demand signal is present. If not,
R
&
C
are reversed wired.
• Verify voltage at contactor coil falls below 0.5VAC when off.
• Review Thermostat Demand Wiring (page 10) for wiring of
Y
&
C
.