Leakage; Troubleshooting Guides; Troubleshooting The 24 Vac Circuit - Frymaster FilterQuick FQG30 Service Manual


Turning the pump gears backwards will release a hard particle and allow its removal.

Turning the pump gears forward will push softer objects and solid shortening through the pump and allow
free movement of the gears
Filter paper/pads that are installed incorrectly will also allow food particles and sediment to pass through and clog
the suction tube recess on the bottom of the filter pan or the suction tube, itself. Particles large enough to block the
suction tube recess or the suction tube may indicate that the crumb tray is not being used.

1.10.6 Leakage

Leakage of the frypot will usually be due to improperly sealed high-limit thermostats, RTD's, temperature probes,
and drain fittings. When installed or replaced, each of these components must be sealed with Loctite
sealant or equivalent to prevent leakage. In very rare cases, a leak may develop along one of the welded edges of the
frypot. When this occurs, the frypot must be replaced.
If the sides or ends of the frypot are coated with oil, the most likely cause is spillage over the top of the frypot rather
than leakage.
The clamps on the rubber boots that hold the drain tube sections together may loosen over time as the tubes expand
and contract with heating and cooling during use. Also, the boot itself may be damaged. If the section of drain tube
connected to the drain valve is removed for any reason, ensure that its rubber and clamps are in good condition and
properly fitted around the drain tube when it is reinstalled. Also, check to ensure that the drain tube runs downward
from the drain along its whole length and has no low points where oil may accumulate.
1.11

Troubleshooting Guides

The troubleshooting guides on the following pages are intended to assist service technicians in quickly isolating the
probable causes of equipment malfunctions by following a logical, systematic process. An additional set of operator
troubleshooting guides are contained in Chapter 6 of the FilterQuick
Manual. It is suggested that service technicians thoroughly familiarize themselves with both sets.

1.11.1 Troubleshooting the 24 VAC Circuit

Prior to checking for problems associated with the 24 VAC circuit, ensure that the unit is connected to a power
supply, the drain valve is fully closed, and the controller is on and is calling for heat (green dot appears under heat
indicator and displays LOW TEMP alternating with the vat temperature).
NOTE: All voltage measurements must be made within 4 seconds of the unit calling for heat. If unit does not fire
within 4 seconds, ignition modules will lock out and controller must be turned off, then on to reset.
The following processes will assist you in troubleshooting the 24 VAC circuit and ruling it out as a probable cause:

24 VAC is not present on the interface board J3 pin 9 (LED 5 (GV)) and, on dual units, on J1 pin 9 (LED
1 (GV)).
1. If LED 3 is not continually lit, the probable causes are a failed 24 VAC transformer or failed wiring between
the transformer and interface board.
2. If LED 3 is continually lit, check the right PWR terminal (LED 4) for 24 VAC. On dual units, also check the
left PWR terminal (LED 2) for 24 VAC. Verify that the F2 fuse is not blown.
a. If 24 VAC is not present, the probable cause is a failed interface board, blown fuse or a defective heat
relay.
b. If 24 VAC is present, check for 24 VAC on V1S (or V1D and V2D).
i. If 24 VAC is not present, check the fuses. If they are good, the probable causes are failed ignition
module(s) or a failed interface board. Replace the questionable ignition module with one known to
be good to isolate the cause.
ii. If 24 VAC is present, the probable cause is a failed interface board.

24 VAC is present on interface board J3 pin 9 (LED 5 (GV)) and, on dual units, on J1 pin 9 (LED 1 (GV)).
1. If 24 VAC is not present across the gas valve main coil (MV terminals), probable causes are an open high-
limit thermostat or a failed wire between the interface board and gas valve. Be sure to check both valves on
dual units.
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1-20
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FQG30 Series Installation and Operation
®
PST56765