Specifications

– 24 –
1. Place in Run position (see
technical cut sheet on fl ame
safeguard relay).
1. See Digital Control System User
manual.
2. Refer to following troubleshooting
guide for RTC controls.
1. Check and/or replace. See
section on troubleshooting PT-15.
2. Check wiring.
3. Install correctly. See section on
troubleshooting PT-15.
4. Check and/or replace. Contact
Factory.
5. Check wiring.
6. Check and/or replace.
7. Check and repair.
1. Check and/or replace
components. See section on
trouble shooting PT-13.
2. Check wiring.
3. Install correctly. See section
on trouble shooting PT-13 and
manufacturer’s cut sheet.
4. Check and/or replace. Contact
Factory.
5. Check wiring.
6. Check and/or replace.
7. Check and/or replace.
8. Check and repair.
1. Check to make sure velocity is
correct.
2. Check and/or replace.
1. See Section X for Manifold and
Valve Adjustments.
2. Check and/or replace.
Symptom Cause Remedy
SECTION VII - TROUBLESHOOTING continued
Heat Mode continued
1. Flame safeguard relay Run/
Test switch in Test position or
fucntioning problem.
1. For DDC System.
2. For RTC RE-26.
1. Defective or misadjusted
transducer (PT-15).
2. Transducer (PT-15) wired
incorrectly.
3. Transducer (PT-15) not installed
correctly.
4. Unit Control Module (UC-01)
defective.
5. Unit Control Module (UC-01) not
wired correctly.
6. Damper motor defective.
7. Dampers binding and/or loose.
1. Building Pressure Transducer
(PT-13), Damper Control
Potentiometer, or null switch
defective or not calibrated.
2. Building Pressure Transducer
(PT-13), Damper Control
Potentiometer, or null switch not
wired correctly.
3. Building Pressure Transducer
(PT-13), Damper Control
Potentiometer, or null switch not
installed correctly.
4. Unit Control Module (UC-01)
defective.
5. Unit Control Module (UC-01) not
wired correctly.
6. Two position switch defective.
7. Damper motor defective.
8. Dampers binding and/or loose.
1. Low air fl ow switch open.
2. Profi le damper and/or motor not
closing.
1. High fi re set incorrectly.
2. Profi le damper not operating
correctly and/or damper motor
defective.
G.
No heat with pilot ok and no
voltage is present at fl ame
safeguard relay output
terminals.
H. Burner will not respond
to temperature.
I. Mixing Box with Airfl ow
Station dampers not
functioning properly. See
Sequence of Operation
for damper control.
J. Return air/outside air
or discharge air/profi le
damper operation not
functioning properly (see
sequence of operation
for damper control).
K. Burner will not come on
in low speed.
L. Flame length too long
in low speed.
(Refer to Digital Control System User Manual for additional troubleshooting suggestions)