Hvac CVH8, Руководство по обслуживанию

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CVH8, HVH8, TVH8, VA9, HVA9, TVA9: APPLICATION GUIDELINE & SERVICE MANUAL
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
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Variable Speed Drive LED Location and Description (Sizes 25, 36, 37, 48, 49 and 60)
A14329
NOTE : If any of the AOC control board header pins are damaged or are not making good contact, AOC board should be replaced.
Table 11 – MOC LED Description (Sizes 25, 36, 37, 48, 49 AND 60)
Reference Color Status Description
LD1 Red
Steady On MOC powered where DC bus is 40volts or greater
Off No power, capacitor voltage drained
LED1 Red
Steady On DCF and board DC high voltage and discharge circuit powered on
Off No power
LED3 Amber
Steady On MOC board switching power supply to power AOC board on
Off No Power
Blinking Indicates communication from MOC to AOC
LD5 Green
Steady On Indicates 5 volt connection status OK between AOC and MOC
Off No Power
Table 12 – AOC LED Descriptions (Sizes 25, 36, 37, 48, 49 AND 60)
Reference Color Status Description
STATUS Amber
Steady On AOC status - standby mode
Blinking AOC function/fault status
COMM Green Steady On Communication from AOC to indoor wall control
Table 13 – LED Not Functioning Properly- Requires AOC or Inverter Replacement
Reference Color Suspect AOC board Failure Description
STATUS Amber
If Amber STATUS light is not on (neither steady nor
blinking), with power to outdoor unit
AOC STATUS is not functioning properly and AOC board
should be replaced.
COMM Green
In Communicating mode, if Green COMM LED is not on
when AB indoor wires are connected to AOC AB
connector and indoor has communications
AOC is not capable of communicating with indoor; AOC
board should be replaced.
Table 14 – Fault Codes requiring AOC or Inverter Replacement
Fault Code Description Fault Flash Code Failure Description
Communications Loss 179 Loss of communication with outdoor unit AOC board; AOC or Inverter may need to be replaced