Status And Diagnostics - Raypak 406A Installation And Operation Manual

NOTE: Both the POOL and SPA setpoints will revert
back to 65°F (18°C) and the POOL and SPA maximum
temperature settings will be 104°F (40°C). These
setpoints will need to be readjusted to desired settings.
NOTE: The LCD temperature display may not agree with
the temperature reading of your pool or spa thermometer.
The heater reads the water temperature at the inlet. Due
to the circulation characteristics of any pool or spa, the
water temperature at the inlet to the heater may differ
from that observed at a given location in the pool or spa.

Status and Diagnostics

The digital models 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
Heating
Call-for-heat established, flame present.
Spark
Spark operating.
No Demand Heat demand is satisfied.
Table O. Heater Status Messages - No Active Faults
The following conditions are displayed in Pool, Spa and
Remote modes.
Display
Thermistor temperatures disagree by
Sensor Failure
more than 2°F (1°C).
Thermistor sensor failed open. Below
Sensor Open
-20°F (-29°C).
Thermistor sensor failed short. Above
Sensor Short
217°F (103°C).
Board is sensing flame when
Flame w/o CFH both main and pilot valves are
commanded shut.
Pilot gas valve output is not in
PV Output Fault
commanded state.
Main gas valve output is not in
MV Output Fault
commanded state.
Voltage is sensed at the Lo NOx
LoNox Tab Fault terminal on a non -Lo- NOx heater
(Lo NOx tab is intact).
Internal Fault Board fault, replace board.
Memory fault, reset setpoints, replace
EEPROM Fault
board if fault does not clear.
Time clock/fireman switch circuit is
Clock/Fireman Sw
open.
Low Temp
Water temperature below 36°F (2°C).
Lockout
Table P. Heater Status Messages - Active Faults
PRELIMINARY
Condition
Condition
UNCONTROLLED DOCUMENT IF PRINTED
The following conditions are displayed only while there is a
demand for heat present.
Display
Water Sw Open Water pressure switch open.
Vent/Field
Vent spill switch/field switch #1 open.
Sw #1
Hi Limit 1 is open High limit 1 open.
Hi Limit 2 is open
High limit 2 open.
Rollout Sw Open
Rollout switch open.
Field-supplied flow switch/field switch
Flow/Field SW #2
#2 open.
Alternating with "No pilot sensed"
- Pilot flame not established within the
Ignition Lockout
required time (15 sec or 90 sec).
(Propane Tab
Alternating with "Main Ign Failure"
Broken)
- Pilot flame lost during the 8 second
trial to ignite the main burner.
Ignition Failure Alternating with "No pilot sensed"
(Propane Tab Not
- Pilot flame not established within 90
Broken) seconds.
Alternating with "Main Ign Failure"
Ign 60 min Delay - Pilot flame lost 4 times within the 8
(Propane Tab Not second trial to ignite the main burner.
Broken) Heater will lockout for 60 minutes
before retrying.
Table Q. Heater Status Messages - Demand for Heat
High Limit Events
Figure 51. High Limit Events
HIGH LIMIT EVENT NOTICE
High Limit events require a manual-reset: To reset unit
press MODE.
Helpful tips to prevent High Limit events:
1. Confirm circulation pump is running during heating
cycle.
2. Pump should shutoff a minimum of 5 minutes after
heating cycle ends.
Failure to follow these steps may cause residual heat
buildup - triggering a High Limit event.
If issues persist, contact your service installer.
Condition
29