Condair GC 130, Руководство по эксплуатации и обслуживанию

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Fault Isolation Condair GS xxxxxxx_A_EN_1905_Condair-GS_OM
Code
Message Probable Cause
Warning Fault
W147 – Blower RPM
Low
The blower identified is running at a lower rpm than exptected by more than the allow -
able tolerance. The unit will continue monitoring the blower rpm.
Loose connections.
– Check the PWM and power connection to the blower.
Low voltage.
– Visually check that LED7 (corresponding to relay REL8 for the blower) on the driver
board lights up when the blower is supposed to be energized.
– Check for 120 VAC on the output side of the blower relay.
Restrictions at blower, or damaged blower.
– Visually inspect the blower and blower inlet for restrictions.
Worn out blower.
– The blower speed may decrease due to wear. The blower is safe to operate, but the
output may be reduced. Order a replacement blower.
W148 – Blower RPM
High
The blower identified is running at a higher rpm than expected by more than the allow -
able tolerance. The unit will continue monitoring the blower rpm and display this warning
if the rpm remains high.
Loose connection.
– Check the PWM connection to the blower.
W149 E149 AP Open Warn The air proving switch identified has opened while the unit was operating or during blow -
er start-up. The unit will interrupt operation and retry three times. After a third attempt a
fault message is generated. The unit is unsafe to operate with this fault condition. Fix the
problem before restarting the unit.
Blockage in the air intake vent or air intake terminal.
– Visually inspect the air intake vent and air intake terminal for blockages.
Defective air proving switch.
– Check that the air proving switch remains closed during operation of the blower. Check
for suction in the pressure tubes. If the air proving switch does not close, it may be
defective and must be replaced.
Pressure tubes not connected, or loose wiring.
– Check the pressure tube connections are attached securely.
– Check the wiring between the air proving switch(es) and connector J2 on the driver
board. With demand off and the blower not operating, check for 24 VAC at pins 1 and
2 on connector J2.
Exhaust condensate removal (on CS model) may be blocked.
– Check for blockages in the exhaust drain line in the unit.
7.5 Resetting Fault Status
With the exception of the over-temperature fault, the following procedure should be used to reset all
other fault conditions including the ignition control module safety lockout.
Reset the “Fault” status as follows:
1. Correct the cause of the problem.
2. Set the On/Off button to the Off position. Wait approximately for 5 seconds, then set the On/Off but
-
ton to the On position. If the alarm condition has been eliminated, the fault message is automatically
reset; otherwise the fault message reappears after a short while.
Resetting Over-Temperature Fault
Reset the over-temperature “Fault” status as follows:
1. Correct the cause of the problem and wait for the unit to cool down.
2. Press the reset button on the over-temperture switch.
3. Set the On/Off button to the Off position. Wait approximately for 5 seconds, then set the On/Off but
-
ton to the On position. If the alarm condition has been eliminated, the fault message is automatically
reset; otherwise the fault message reappears after a short while.