Operation Of Ignition Module (Icm); Diagnostic Indicator; Error Ps Message - Pentair MT125 Installation And User Manual

SAFETY CONTROLS
OPERATION OF IGNITION MODULE
, see Figure 45,
The Ignition Module
control utilizes a microprocessor to continually and safely monitor, analyze, and control the proper operation of the gas
flame holder. The module with the presence of the flame sensor, using flame rectification, allows the heater to operate.
RISK OF EXPLOSION OR FIRE CAUSING BURNS OR DEATH IF SAFETY INTERLOCKS ARE DISABLED. DO NOT attempt to operate
heater when The ERR HLS, ERR AFS, ERR IGN, ERR AGS, ERR SFS, E01, E05, E06, 126 messages on the LCD indicates a fault in the
heater or its controls. If any of these messages are displayed, shut down the heater (See "TO TURN OFF GAS TO THE APPLIANCE"
on page 43), and have a qualified service technician check the system.
Flame Current

Diagnostic Indicator

(See table below)
Table 7. Diagnostic Indicator
Displayed Message
CONTROL FAULT
AIR FLOW FAULT
FLAME NO CALL FOR HEAT
IGNITION LOCKOUT
WEAK FLAME
GOOD FLAME

ERROR PS MESSAGE

• The ERR PS message on the LCD indicates that there is insufficient water flow to the heater. If the pump is operating,
this usually indicates that the filter and/or skimmers should be cleaned (some filters may require back-washing). If the
message remains on after the filter/skimmers have been serviced, the system should be checked by a qualified service
technician.
460906 Rev. D 8/2020
(continued)
is microprocessor based and operates on 24VAC supplied by the transformer. The
WARNING
Diagnostic errors are displayed on
the control panel LCD: PS, HLS, SFS,
AFS, AGS, IGN, or NONE.
See Troubleshooting (page 48-56)
Check Point
Description
Displays Message on Automation System
Displays Message on Automation System
Displays Message on Automation System
Displays Message on Automation System
Displays Message on Automation System
and viewed on Heater menu
Displays Message on Automation System
and viewed on Heater menu
Figure 45.
MASTERTEMP 125 Pool and Spa Heater Installation and User's Guide
Section 2. Operations
45