Reznor, PVE, Installation Manual EN 2019-11, D301113 iss D Page 35
No
No
Yes
Yes
Yes
Check the flue
pipe system -
Flue blocked
or too long?
Correct if
necessary
Faulty
burner
controller
(E).
No
Check differential air
pressure switch (S3).
Check switch point
Delta P. Does the
burner ignite?
Check connection
J11 (6–7) at burner
controller (E). if
necessary correct, does
the burner ignite?
Faulty differential
air pressure
switch S3: replace
Reference tube
to differential air
pressure switch is not
airtight or blocked?
Probable Cause
Remedy
Venter motor will not start
1. No power to unit
Turn on power, check supply fuses or circuit breaker
2. No power to venter motor
Check connections at burner relay and/or venter motor terminals
3. Integrated burner relay
defective
Replace burner relay
4. Defective venter motor
Replace venter motor (refer to section 26)
5. Fuse blown (F3.1)
Replace fuse
6. Fuse burner relay blown
Replace fuse
7. LC1 open
Set heater on ventilation until LC1 closes
Replace LC1
Check for obstruction at fan side
8. LC3 open
Reset LC3
Replace LC3
9. Unit in lock-out
Push on reset button
10. Room thermostat open
Set thermostat above room temperature
Table 17a : Trouble shooting
Faulty differential air pressure switch 2c
