Dacor CPO230WO and CP0130C Cooling Fan Problem and F1,F2,F3,F4 error codes

At www.FixYourBoard.com, we see controllers come in for Dacor model numbers CPO230W, CP0130C.  These models use the following control boards control that can be rebuild quickly and reliably – 82810, 82812, 82811, 82837, 82875, 82874.

The most common symptoms for these boards are F1,F2,F3,F4,F5,F6 error codes.  Sometimes they throw F6 codes.

For these models, when the cooling fan does not operate, it is not due to the control boards.   The following diagram illustrates this.  The red line annotates how the fan is turned on using the DLB relays to supply L1 to the fan through the thermal switch.  This means that if the oven is heating, the DLB is working and the problem must be with the thermal switch or cooling blower itself.  Note that when the cooling fan does not work, the oven can have a difficult time controlling temperature.  It is not uncommon for the oven to burn the top of the food while baking if the fan is not working properly.Dacor  Wiring Diagram for CP0230

Meaning of F1,F2,F3,F4,F5,F6,F7 codes for Garland/Manitowoc Ovens

Garland oven controllers are programmed to give meaningful information if they enter into a fault condition.  This applies to most Garland ovens such as models: UCO-G-5, ECO-G-10, ECO-G-20, ICO-G-10, ICO-G-20, IC0-E-10 , ICO-E-20, ECO-E-10, ECO-E-20,MP-ES, MP-ED, MP-GS, MP-GD, PaceSetter EC-I-36, EC-II-36, EC-I-42, EC-II-42, GC-I-36,GC-II-36,GC-I-42,GC-II-42, Trendsetter ovens TE3, TE4, TTE3, TTE4, TE3/4-x, TTE3/4-X, TE3/4ECH, TTE3/4ECH, TG2A, TG3,TG4,TTG3,TTG4, Sunfire SDG-1 and SGD-2, TE2A, KFC MCO-G-5K and others.

Many times the result of the F code troubleshooting points to the control board /Timer/ERC.  Don’t worry, they can be rebuilt even if the part is no longer available (NLA) or obsolete.  With www.garland.fixyourboard.com , you will never have to scrap a commercial oven due to failed electronics.

Some part numbers that throw F-codes are: 1517700, 1517701, 1517702, 1517703,1544800, 1517704,1517705, 1517706, 1517710 ,1544801, 1933801, 1933701,4521705,4521282, 4515873, 1025299, 1025204,1034199, 1244705, 1285601, 1025204, 1244704, 1285700, 1905701, 1025204,1244705, 1905601 among others.

Here is a summary of the fault codes and their meaning:

F1Relay Output is Enabled When Not Cooking. The cook relay is closed with no call for heat.
-Control should be rebuilt.

F2 Over Temperature Alarm. The control is sensing an oven temperature 50 degrees or more above the
maximum temperature of 500F
.
-Check the probe wiring and the probes resistance  and replace if faulty
-If probe is functional, rebuild control.

F3Open Probe Circuit. The control is sensing an open circuit at the probe input.

-Check the probe wiring and the probes resistance and replace if faulty.

-If probe is functional, rebuild control.

F4Shorted Probe Circuit. The control is sensing a short circuit at the probe.
-Check the probe wiring and the probes resistance and replace if faulty
-If probe is functional, rebuild control.

F5Relay outputs not enabled when cooking. The control is in cook mode and the heat relay is not closing.
-The control should be rebuilt

F6No 60Hz input. The control does not sense the input power.
-Check the power supply for noise
-If the supply is correct, rebuild control.

F7 EEPROM. The control has detected that the calculated EEPROM check sum is incorrect.

-Reset power to control and if problem persists, rebuild control.