Install Instructions

62
XIII. TROUBLE SHOOTING (continued)
Possible ERR (Boiler Control Error) Values:
Err
Value
Description
1 Temperature Sensor Fault
2 Communications Fault
3 Internal Hardware Fault
4 Burner Output (B1) Fault
5 Line Voltage Fault (< 80 Vac)
6 Fuse Missing
7 User Setting Lost, (reset to factory defaults)
8 Manual Reset Lockout (resettable)
Possible STA (status) Values:
sTa
Value
Description
1 Standby
4 Pre-purge
6 Trial for Ignition
7 Carryover
8 Running
9 Post-Purge
10 Retry/Recycle Display
14 Hard Lockout
15 Waiting for Limit to Close
16 Flame Present Out of Sequence
17 Self Test
StA Status (see Status Numbers)
bt Boiler Temperature
SP Operating Setpoint (Outdoor Reset)
HL High Limit Setpoint
HdF High Limit Differential
hr Heat Request Status
dh DHW Heat Request Status
CAD Cad Cell Resistance (ohms)
run Run Time Hours
CYC Boiler Cycles
Err Error (see Error Numbers)
Erp External Device Error (see Error Numbers)
Operating Mode Parameters
Press “I” key on the control to
change from one parameter to the
next. Each setting will alternate
between display code (for
example STA) and value.
Figure 36: Boiler Control
User Interface
3. Control locks out after Trial For Ignition (TFI).
a. No oil to burner.
b. Shorted electrodes.
c. Nozzle clogged.
d. Airow too high.
e. Ignitor module defective.
f. CAD cell defective.
g. Oil valve stuck open or closed.
Note: The Safety Monitoring Circuit (SMC) is
designed to provide lockout in the event of a
stuck or welded motor relay.
C. IQ OIL BOILER CONTROL
When a problem occurs with the boiler operation, the IQ
Control System easily provides specic, valuable information
to help resolve the issue quickly. The display on the Boiler
Control should be the rst place to check, see Figure 36.
1. Error Code "Err" IS NOT displayed on the Boiler
Control: This is one of two conditions that occur when
a problem arises. In this circumstance, the following
table can be used to determine the problem and
possible causes.
NOTICE
If ame is not established within 15 seconds of
oil valve actuation (known as Trial For Ignition
[TFI]) lockout will occur. Lockout is indicated
by a red LED solid-on located on the oil primary
control.
Hard Lockout will occur if the Oil Primary
Control locks-out three (3) times during a call
for heat. This is indicated by red light reset
button solid-on.
D. BEFORE TROUBLESHOOTING
The following pages contain trouble shooting tables for
use in diagnosing control problems. When using these
tables the following should be kept in mind:
1. This information is only meant to be used by a
professional heating technician as an aid in diagnosing
boiler problems.
2. Where applicable, follow all precautions outlined in
Section IX, System Start-Up .
3. In general, these tables assume that there are no loose
or miswired electrical connections. Before using these
tables inspect all electrical connections on the boiler to