26
Status and Diagnostics
The heaters are programmed to display a variety of status
and diagnostic messages, depending on the operating
conditions.
The following heat status messages are displayed in Pool,
Spa, and Remote modes when there are no active fault
conditions.
Display
Condition
Heating
Call for heat established, flame present.
Spark
Spark operating.
No Demand
Heat demand is satisfied.
Table L. Heater Status Messages - No Active Faults
The following conditions are displayed in Pool, Spa and
Remote modes.
Display
Condition
Sensor Failure
Thermistor temperatures disagree by
more than 2°F (1°C).
Sensor Open
Thermistor sensor failed open. Below
-20°F (-29°C).
Sensor Short
Thermistor sensor failed short. Above
217°F (103°C).
Flame w/o CFH
Board is sensing flame when
both main and pilot valves are
commanded shut.
PV Output Fault
Pilot gas valve output is not in
commanded state.
MV Output Fault
Main gas valve output is not in
commanded state.
LoNox Tab Fault
Voltage is sensed at the Lo NOx
terminal on a non -Lo- NOx heater
(Lo NOx tab is intact).
Internal Fault
Board fault, replace board.
EEPROM Fault
Memory fault, reset setpoints, replace
board if fault does not clear.
Clock/Fireman Sw
Time clock/fireman switch circuit is
open.
Low Temp
Lockout
Water temperature below 36°F (2°C).
Table M. Heater Status Messages - Active Faults
The following conditions are displayed only while there is a
demand for heat present.
Display
Condition
Water Sw Open
Water pressure switch open.
Vent/Field
Sw #1
Vent spill switch/field switch #1 open.
Hi Limit 1 Fault
High limit 1 open.
Hi Limit 2 Fault
High limit 2 open.
Rollout Sw Open
Rollout switch open.
Flow/Field SW #2
Field-supplied flow switch/field switch
#2 open.
Ignition Lockout
(Propane Tab
Broken)
Alternating with “No pilot sensed”
- Pilot flame not established within the
required time (15 sec or 90 sec).
Alternating with “Main Ign Failure”
- Pilot flame lost during the 8 second
trial to ignite the main burner.
Ignition Failure
(Propane Tab Not
Broken)
Alternating with “No pilot sensed”
- Pilot flame not established within 90
seconds.
Ign 60 min Delay
(Propane Tab Not
Broken)
Alternating with “Main Ign Failure”
- Pilot flame lost 4 times within the 8
second trial to ignite the main burner.
Heater will lockout for 60 minutes
before retrying.
Table N. Heater Status Messages - Demand for Heat
RELEASED
For Reference Only