HTP Pioneer, Руководство по установке и запуску

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65
LP- 325 REV. 3.3.15
926 CONTROL BOARD ERROR CODES
CODE DESCRIPTION CORRECTIVE ACTION
Fou Outdoor sensor shorted or
temperature less than -40
o
F
Inspect wiring from outdoor sensor for damage or shorted connections and repair as necessary. Measure
resistance of outdoor sensor and compare to resistance chart. If not within range on chart, shorted or open,
replace sensor.
E19
Line voltage frequency out
of range.
Inspect power wiring to appliance and repair as necessary. If connected to line voltage, notify power
company. If connected to an alternate power source, such as a generator or inverter, make sure line voltage
frequency supplied by the device is 60 Hz.
FLU
Blocked Vent Pressure
Switch open, Condensate
cup Full, Condensate Cup
not present
1. Check the flue vent to be sure it is not blocked or damaged.
2. Check the blocked vent pressure switch operation by applying a jumper.
(If the switch is not functioning properly, replace it.
LEO
Water Level in Tank is Low
1. Be sure all air is bled from system.
2. Inspect low level switch and wiring for damage and repair if necessary.
LOU 24 Volt Low
1. Check line voltage. Must be between 100
– 128 volts.
2. If available, connect a PC and, using HTP service software, check the 24v supply display in the lower left
corner of the screen. The number displayed here must be greater than 128 and should be greater than 250.
Use this as a troubleshooting guide as you follow the steps below.
3. Remove 10 pin Molex connector from customer connection board. If LOU clears, then the problem is with
external sensor wiring. Examine external sensor wiring for shorts to ground, repairing as necessary. If LOU
code is still present and the appliance is so equipped, disconnect high gas pressure switch, then low gas
pressure switch, then UL 353 low water cutoff in this order, one at a time, to see if LOU code clears. Replace
faulty part. Check low voltage wire harness in appliance for shorts to ground.
4. If LOU only occurs when burner tries to light, check gas valve for excessive current draw.
5. If LOU is present with the low voltage harness disconnected from the 926 control board, replace the 926
control board.
E03
System sensor failure
(Cascade Master only) 1. Check wiring to system sensor. Repair as necessary.
2. Check sensor resistance. Compare to the resistance table in this manual. Replace if not correct.
FL
Low water flow (Users with
optional flow switch only).
1. Check to see if appliance circulator is functioning. Repair as necessary.
2. Be sure water is flowing in the system. Check for valves that should be open, plugged filter screens, etc.
3. Check flow switch and wiring. Repair as necessary.
Table 17
926 Control Board FAULT
Codes Description Remedy
F00
High temperature switch limit
exceeded 194
o
F.
1. Try reset. If F00 repeats, create a demand for hot water. (DANGER: Use caution to prevent burn
injury.) If water is above 194
o
F, test upper and lower temperature sensor with an ohmmeter. (Refer to
resistance chart, this section.) Replace bad sensor. If water is below 194
o
F, test high temperature switch
and wiring with ohmmeter. Switch should be closed at this point. If not, replace switch.
2. If unit did reset successfully, let the appliance run and go into the status menu to check the upper and
lower temperature sensor. If either reading displayed does not make sense, check appropriate sensor
with ohmmeter. (Refer to resistance chart, this section.) Replace bad sensor. Do an OHMs reading on
both sensors to check continuity.
F01
Vent temperature limit
exceeded.
1. Inspect all flue piping. If the flue is damaged or shows signs of overheating, repair or replace the flue
parts as necessary before proceeding.
2. If the flue piping system is intact and there is no sign of the flue overheating (such as discoloration or
melting), push the red reset button on the flue switch.
3. Be sure the appliance is connected to a water supply and full of water.
4. Push the RESET button on the appliance control panel. The appliance should light. If the appliance
lights, proceed to step 5. If the appliance does not light and the display again begins to flash F01, inspect
the wiring to the flue switch, repairing or replacing as necessary. If the wiring is intact, replace the flue
switch, using care to mount the new flue switch in the same position and mounting holes as the old one. If
the display flashes a code other than F01, follow the troubleshooting guide for that code.
5. Observe operation for 5 minutes. Place the probe of an exhaust analyzer into the flue system within 6
feet of the appliance. The exhaust temperature should not rise above 190
o
F after several minutes of
operation.
6. If the flue temperature is below 190
o
F and the appliance again goes into lockout displaying F01,
replace the flue switch, using care to mount the new flue switch in the same position and mounting holes
as the old one. If the display flashes a code other than F01, follow the troubleshooting guide for that code.
7. If the flue temperature increases to over 190
o
F, consult HTP for further assistance.
F02
Interrupted or shorted upper
(supply) temperature sensor.
1. Check the electrical connection to the appropriate temperature sensor.
2. If connection is okay, replace bad sensor.
F03
Interrupted or shorted lower
(return) temperature sensor.
F05
Upper (supply) temperature
sensor exceeds 210
o
F.
1. If water in tank is not greater than 210
o
F, check wiring. Repair if faulty.
2. If wiring is okay, check appropriate sensor with ohmmeter and compare to reading in resistance chart
above. If reading does not agree with water temperature, replace bad sensor.
F06
Lower (return) temperature
sensor exceeds 210
o
F.