Paloma PH-28CDVSN, Инженерный справочник

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C. The Fan Motor does not activate even when the Hot Water Tap is opened.
1. No Error Code.
Display maintenance information [1y] with water
flow of more than 1.0 gal/min.
NOTE: [1y] shows the GPM (water flow rate) detected by
Water Flow Sensor.
x 0.1 Gallon/Minute
[1y]
Does it indicate
more than 1.0 gal/min.?
*1
NO
YES
Replace Water Control Assy.
Replace Burner Control Assy.
*1 Make sure that there is no difference between the indicated water flow and
actual water flow.
Examples:
Actual water flow: 1.00 ~ 1.09 gal/min. ----- Indication [10]
Actual water flow: 2.60 ~ 2.69 gal/min. ----- Indication [26]
2. Error Code [24] (Malfunction of Operation Switch) is displayed.
Does it
operate by
pushing either one of the
Max./Min. Button?
*2
The water heater seems to be normal. Operate it without pushing the Max./Min. Button.
NO
YES
Replace Burner Control Assy.
*2 Do not operate water heater by pushing the Max./Min. Button on PC Board.
3. Error Code [21] (Malfunction of Air Intake Filter Switch) is displayed. (Indoor Model Only)
NO
YES
Replace Air Filter Switch Assy.
*3 Measure the voltage and resistance of connector .
Between both White wires:
Voltage: Less than 1 VDC
Resistance: 1 ohm
(Measure these after the air filter switch is ON.) O
Is the
Air Filter Switch ON?
*3
Replace Burner Control Assy.
NOTE: In case that the inlet water temperature is high even if the water flow
rate is more than 1.0 gal/min., the water heater may not ignite. In such
case, set the temperature at the maximum.
NOTE: When performing and/or servicing the water heater without front cover (opened),
operate it by pushing the air filter switch (ON).